chika

the pizza delivery guy and the gold palace (exc the uke has truma and seme helps him get over it) kinda

maybe this https://www.mangago.zone/read-manga/incidentally_living_together/ but they both got trauma and help heal each other

Can't really put it in trauma but this one kinda fits

https://www.mangago.zone/read-manga/shitto_wa_ai_o_kumoraseru/

https://www.mangago.zone/read-manga/the_last_step_on_the_way/ (here they both help each other, my personal fav <3)

https://www.mangago.zone/read-manga/gift_ichinose_yuma/
(this one fits too ig)

i read this in 2021 and gave it 5 stars but i honestly don‘t remember anything lmao so i hope it‘s good
https://www.mangago.zone/read-manga/koishite_kissshite_kanjaitai/
this one is not omegaverse but i think you might like it
https://www.mangago.zone/read-manga/fureai_lesson_keiyaku/

also i see Fukutsu no Zono in your Want to read list, please read that one if you haven‘t yet it‘s so good and cute

https://www.mangago.zone/read-manga/99_9_of_lovers/
https://www.mangago.zone/read-manga/kamisama_nanka_shinjinai_bokura_no_eden/

Some spoilers but ones that should appear in the first chapter or so. Also fair warning most of these are either new relationships or the trope is new to the world lol:

Omegaverse: https://www.mangago.zone/read-manga/turning/ (Fair warning though it's not very heavy on the actual omegaverse stuff and it has regression. The 1st timeline has a fairly bad 1st relationship, then but the 2nd is pretty healthy)
https://www.mangago.zone/read-manga/kiraide_isasete/ (themes of rape, but not between the main couple)
https://www.mangago.zone/read-manga/tadaima_okaeri/

Subverse:
https://www.mangago.zone/read-manga/kocchi_muite_glare/
https://www.mangago.zone/read-manga/tameshi_ni_komando_itte_mita/