The literature available on sex in the common consciousness is not very good.
I find that they're often written with some kind of therapyspeak, new-age style, that they tend to overemphasize the role of the clitoris in orgasm (vs. cervical fornices, which barely even exist in the reddit-sphere), and even recommend that men practice cunnilingus, which seems wrong.
Ray Peat himself had some interesting content on sexuality in "Mind and Tissue", somewhat in line with Evola, describing the process of sex beyond just the mere reproductive aspects, as working to express experiences (e.g., the experience of being male or female). I don't think he's written that much about it besides that.
Is there any literature that this board recommends on the subjects?
The most interesting thing I've seen on the subject is this:
https://summit.sfu.ca/_flysystem/fedora/2023-02/etd22010.pdf#page=161
Other subjects of interest include the differences between adrenaline sex and oxytocin sex, tantra, etc.