Question!

honestly, there's a few omega x omega series but all the ones I've read have j been SA/plotless smut and I wouldn't rlly recommend them. but, if you're interested, here they are:
- https://www.mangago.zone/read-manga/seisansei_no_takai_futari_no_seisansei_no_hikui_seikatsu_hypnosis_mic_dj/
- https://www.mangago.zone/read-manga/ai_to_makoto_moriyo/
- https://www.mangago.zone/read-manga/sukijanaitte_hyakkai_tonaeta/
- https://www.mangago.zone/read-manga/omega_bite/

the ones I haven't read:
- Light Tea, Sweet Wine (novel)
- Takatora-kun to Omegatachi

and when it comes to femboys, there's very few series that aren't j smut. there prb are some but I don't know any of them . you can find a lot of series in which the mc enjoys dressing in feminine clothing though, but they're not femboys. + the closest you'll find to actual femboys is series in which the mc is super short and petite and dressed in various styles (e.g. 'the abyss' but I rlly don't recommend this).
if you want any recs ab MCs that enjoy crossdressing or wearing more fem/unisex clothing, j lmk!

Thank youuuu!!!! I been searching for omega x omega actually. And now you are such a huge help! Aghh thank youuu