My personal favourite would be:
1) Tadaima, Okaeri (fluffiness alert)
2) Kashikomarimashita, Destiny
(The main couple and side couple are both lovable.. and the ending is like what i hope for all manga to be.. They’re perfect uwuu)
3) Sign (This one is not omegaverse, but they’re very cute!)
Happy reading~ I hope you enjoy them
Highly recommend this one as well, especially if you’re looking for a more manly type of omega. Also recommend http://www.mangago.me/read-manga/megumi_and_tsugumi/ and http://www.mangago.me/read-manga/a_tough_alpha_wants_to_be_loved_cornered_by_a_young_omega/

I don't know what to say but, this is way too good to be true.. I mean, I'm not into this kind of genre at all! At. All! I don't hate yaoi and I also don't like it and sometimes I got disgusted.. But this!! Thiss!!! Is way too good!!! It's like I found a hidden treasure chest and when I opened it, my heart and judgments just flew away and now I'm even considering to try another yaoi specifically omegaverse after I read this ⁄(⁄ ⁄·⁄ω⁄·⁄ ⁄)⁄ thank you for creating this ╥﹏╥
PS: Please suggest a story who's like this <3