Abarbanel (Bereishis 1:27) and Netziv Beresishis 1:26

Abarbanel (Bereishis 1:27): Even though Man was created as male and female, they were not both equally perfected. And even though they were the same species they were not equally in the image of G-d. That is why the verse states, “In the image of G-d He created him (singular), male and female He created them.” In other words only Adam was created in the image of G-d because he was the reason and purpose for Creation. It was only for the necessity of procreation that Man was created as male and female. In fact there is no mention of male and female being created in the image of G-d but only for procreation. Gender is found in all animals and it has nothing to do with the image of G-d. From this we can understand why the Torah doesn't say “man according to his species” but it does say that man was created male and female were created by G-d. That is because man is different than other animals in which the female is on the same level as the male and is fully equal to him in nature and that is why it says about them “according to his species” without giving the male any superiority to the female.  However it is different concerning man because the male is the reason for creation of humans and he alone was created in the image of G-d. Thus the Torah states in the singular grammatical form, In the image of G-d He created him. That is because the male is the one who comprehends mysteries of wisdom and not the female about whom our Sages (Yoma 66b) said, “There is no wisdom in a woman except for the spindle” That is because the creation of the female was only an afterthought to provide the man with a helper and for the purpose of procreation as the Torah states later. So in summary we see that man was originally created alone in perfection while she was made afterwards in order to serve him. So here it just states the fact that she was created but it is only later (Bereishis 2:18-24) that the details of her creation are given. However that understanding seems to be inconsistent with the view (Eiruvin 17a) that male and female were in fact created at the same time as two entities joined together back to back. However in fact our assertion that woman lacks the image of G-d and is inferior to the male is also consistent with the view that Man was created as a hermaphrodite.  In other words man was created with an additional form from which woman was made. Thus it was like man had two aspects (pirtzuf) of male and female as an androgynous being (a Greek word describing a person who has both male and female sexual organs). However the Man was in fact a male in reality while the female aspect was only subordinate and an appendage to the male entity – in order to make a woman from it later. Thus we can explain that when it says Man was created male and female, it means that since the dominate concern was to create an intelligent being whose purpose was intellectual – for that purpose there was no need for the female and thus it was not proper to create with him the female. However this verse of “male and female He created them” teaches that in fact it was not so but rather G-d wanted that man would be created not only with the intellect but also with a non intellectual material aspect...  So even though according to this second view that Man was created with both male and female aspects but the two aspects were not equal in perfection but rather it was the male aspect – the primary one – which was created with the image of G-d.  Man was created as male and intellectual and only secondarily as female to enable the making of a second subordinate entity to serve the male

Netziv(Bereishis 1:26): Let us make man – G-d did not say, “let us make a being like an animal in our likeness” and afterwards call him ‘man’ as is actually written later in Bereishis (5:2). But the phrase, “let us make man” means that there is no need to give man this name – rather his character shows that he is man. But if so it is difficult. Why is it written afterwards that G-d called their name man – which implies that there was a need to give a name...? But rather the matter is like this – that man is different from all the species since all the species were created in such a way that the species was unitary in its purpose and character; which is not the case for man who rose in G-d’s thought to be of two types of character. The one would be cleaving to his G-d, ready and serving in the world like an angel does in the Heavens. And the second is such that he would be political and take care of his own needs; even though he would nonetheless do the will of G-d, it would not be on the level of the first. And behold, according to the first characteristic he is automatically man (adam) based on the phrase ‘I will be similar to the most High – meaning that within him are included all the powers of creation and he rules over everything. And behold he is like the firstborn son of a king who rules like the king. And because of this, everyone understands that he is the son of the king in that they see him ruling over every detail. Which is not the case with the son of the king who is not the firstborn and the king merely makes him rule over some detail and his fellow over another detail and so too with all those that govern the kingdom. It comes out that all of them together are similar to the king; but each one by himself is only similar to the king when he is given the name of ruler over that detail that he governs. And thus is man – the individual of spiritual stature is different then the simple individual. And in Shabbos (112b), they hinted to these two types of men. And it is stated in the first version of a particular thatement “this is not a man” and in a second version “this is an example of a man” –the bexplanationof this being a man of spiritual stature. But the general human species is called man by the nature of the matter in that they as a group rule over the entire creation. And this is according to G-d’s plan. (And so too with the name Israel which indicates being higher than the nature of creation and the running of the world. It will be explained later in Vayishlach that the whole nation is called Israel, but concerning individuals some are called by the name Israel and some have not reached this.) And if so in the statement “let us make man” its explanation is [that it refers to] the general species of man and it is certainly called man even without being given the name since in this general species is the creation dependent and in this detail they are similar to the Creator. And Adam specifically before he sinned was worthy of being called man without being given the name; but after he sinned he was given the name of man and it will be explained further.“According to our likeness” – the image is according to our likenss and automaticallly man – who is clothed in it – is in the likeness of G-d and in this is the power of man.

Netziv (Bereishis 1:27) In the image of G-d  - all of nature was included in him. And from the time that it arose in the though and word of G-d that there should be nature, then G-d was called with the name Elokim. And since all of nature is included in man – behold – he is in the image of G-d. But this is not the case except in the man of stature as Adam was before the sin. Afterwards...."Male and female He created them." The verse does not come to explain that this species, more so than all the other creatures, has a male and a female. Rather, [it comes] to teach you that they are two beings, as will be explained below. This is because the male of this species is not at all similar in his character to the female of the same species. As Kohelet says: "One man among a thousand I have found; but a woman among all those I have not found" (Kohelet 7:28). That is, that a man of virtue resembling his Creator in the image of God is found one in a thousand; Which is not the case regarding women – who only fits the second description of man – who is only described as being man