Omegaverse Yaoi

Naoto(omega) is a young omega with a kid trying to hold down a job. He ends up working as a janitor at Hazuki(alpha)'s school, but Hazuki is convinced Naoto is his fated pair. Honestly, I only read the first volume, so the trigger warnings don't cover anything after that.
Trigger warnings: discrimination, rape, attempted rape.

Rei(beta→omega→beta?) and Tensei(alpha) were childhood friends until Rei became an omega, and they became a pair. Now married, Rei isn't sure Tensei really wants this, so he's trying to cancel the pairing and get a divorce.

Ruka(omega) and Taisei(alpha) are mates and childhood friends, but now they meet up only for Ruka's heat before immediately going their separate ways.

Minato(omega) and Jin(alpha) are childhood friends, in love, and planning to become a pair and marry, until Minato finds out that he will likely never be able to bear children and starts running away.

Kaede(alpha) received a sudden confession from Azusa(omega), who he apparently saved once in middle school. Kaede tried to refuse Azusa, then thought he'd play with him and throw him away, but Azusa has a plan.

Asahi(omega) is drunk on his birthday when he thinks he runs into his ex-boyfriend from three years ago who left him for his fated pair. But when he wakes up the next morning, he realizes it was his ex's twin brother(alpha), and though they look the same, their personalities are nothing alike.
Trigger warnings: dubcon(heat), cheating.

Kei(omega) knew the moment he met his new, younger step-brother, Kouki(alpha), that they were fated mates, but he tried to stay away to avoid upsetting his mother, until the time his parents were on a trip when his meds stopped working.
Trigger warnings: incest themes (stepbrothers), child abuse.

Nio(omega), who was kicked out of his alpha-centric household years ago, decides to adopt Suou(alpha), the step-child of his deceased brother to get him out of that house.

Yuki(omega) has a condition where he doesn't go into heat, so he's been able to raise his ward Haru(alpha) peacefully until Haru kissed him on his 18th birthday, inciting Yuki's heat.

Hana(omega) is a barista who secretly admires his favorite customer from afar, the flower-arranger Renjaku(alpha). But when he unexpectedly goes into heat for the first time in years, Renjaku is the only one he can ask for help.