Responses
https://www.mangago.zone/read-manga/shima_chanchi_no_tsugaijijou/
https://www.mangago.zone/read-manga/samezoku_e_no_sasagemono/
(Not really omegaverse but men get pregnant)
Here's the ones I've liked
https://www.mangago.zone/home/mangalist/2684731/
In dire need of good omegaverse stories