Here you go:
- December (the top is toxic to the world to protect the omega. There is violence, but never against each other).
- Define the relationship.
- Smyrna & Capri (another couple that would kill and die for each other).
- Romance, but not romantic.
- Omega complex.
- Summer sparks.
- Willow love story (some heavy themes, but the relationship itself is green flag).
- Private call.
- Pheromone fetish.
- In the air: be, be (again, stuff happens with other characters, but main couple is green flag).
- A tiger's den (not a favourite, violence towards others, but overall relationship).
- Restless webtoon (SH and bullying from other characters. Main couple green flag).
- The rogue prince is secretly an omega (main couple green flag, other characters can burn in hell).
- Alphega (still at the beginning, seems like it's green flag through and through according to some novel spoilers as well).
- Dash (general angst and yearning, but no rape).
- Wild beast warning (bullying in the school environment, but no other TWs).
- Not what the doctor ordered (sexual harrassment from a side character).
- My destined one (again, sexual harrassment from other characters).
- Look at me (there's dubcon bc of sex done in a rut, but they address it and actually talk about how it was consensual in the end etc so it is the healthiest outcome I've seen when this happens).
- Scent spark (noncon but not between main couple).
- Fight club.
- Kamisama nanka shinjinai bokura no eden.
- Diamond dust.
- Can't help it.
- Do you hate me because I'm an alpha? (dubcon bc of rut).
- Baby, we need to talk (dubcon bc of rut).
There are probably some more but I think this is a comprehensive selection of my favourites. If you need more or have read most of these, here is my list (carefully curated with TWs highlighted): https://www.mangago.me/home/mangalist/3784248/
I don’t really read much omegaverse, but here’s the ones I’ve read:
https://www.mangago.me/read-manga/aesthetics_of_unpleasantness/
https://www.mangago.me/read-manga/ai_to_makoto_moriyo/
https://www.mangago.me/read-manga/alpha_ga_alpha_wo_daku_houhou/
https://www.mangago.me/read-manga/dawning_light_kaizen_scan/
https://www.mangago.me/read-manga/takane_no_hana_wa_chirasaretai/
https://www.mangago.me/read-manga/shiawase_ni_michita_yoru_no_niwa/
https://www.mangago.me/read-manga/exclusive_no_love_zone/
I haven’t read these, just know they’re an omegaverse:
https://www.mangago.me/read-manga/kurui_naku_no_wa_boku_no_ban/
https://www.mangago.me/read-manga/kurui_naku_no_wa_boku_no_ban_beta/
https://www.mangago.me/read-manga/kurui_naku_no_wa_boku_no_ban_re/

I need omegaverse manga
Give me links(▰˘◡˘▰)