Samkhya was the first Hindu school I explored, and it made a lot of sense to me. However, given it's a sort of atheist dualism, I don't think it sits well with Advaita conceptions of Brahman and Maya.
Well perception sir.
You are right, Sankhya does not speak about Brahman and only Atheist Dualism.
But, do you know!!!, No Upanishads speaks about Maya. In BG and Puranas, it is called as "Yoga Maya and My Maya", a power of Me (like a magic wand of Harry Potter, where the wand is useless without wielder), to bring Unmanifestations to Manifestations.
That's all is spoken about. It is the 'play' of Shankara or Advaita Vedanta, which gave much importance to Maya, as Illusions and such. Yoga Vasishta speaks about Illusion and Dreams concept, but not named it as Maya, just as an example of everything's uncertainty.
To speak about Brahman, there is only two things and none other. Only two things which the Brahma sutras and Upanishads and everything speaks about Brahman.
They are, "Everything is Brahman" and "Brahman is not everything".
To Understand Brahman, there are two views.
1. When one goes from bottom to top (i.e. Small to Big - limited to Unlimited), then attribute Every limitations to that Unlimited. Everything is Brahman.
2. When from top to bottom, Big cannot be attributed to Small, Unlimited not to limited existence. So, Brahman is not everything.
It is like "This is That" but "That is not This".
There is none other to speak about Brahman (also about Maya - nothing to speak about Maya except power of Brahman).
Even in Brahma sutras, only two chapters speak about "Everything is Brahman and Brahman is not everything". All other is about after death and liberation and etc.,
Brahman is not speakable but two ways to reach it by attributing "Everything is Brahman" or by negating all attributes to That as "Brahman is not this not this".
Without Sankhya, Brahmasutras and Bhagavat Gita also cannot be written. It is with the assistance of Sankhya, everything is written. Everything in Sankhya is made as "This", and said as "This is Brahman and Brahman is not this". Without 'this' (Sankhya), THAT cannot be spoke or written about.