Do you have any manga recommendations about omega, alpha, beta, in short omegaverse?

Pheromone Shower: https://www.mangaupdates.com/series/u1r1i5h/pheromone-shower-omegaverse-short-stories

Here are some titles I enjoyed:

Scattering His Virgin Bloom (Sakyou, Aya)
Takane no Hana wa Chirasaretai

I've Become an Omega Today (Maiki, Sachi)
Kyou Kara Omega ni Narimashita.

Not Fated (Akimoto, Yoshi)
Unmei Ja Nai Hito

Will You Marry Me? (Tsurugi, Ichiro)
Kekkon Shite Kudasai!

Happy reading!

Since your only criteria was length, these are all 1 volume.

Kimi wa Mou kamenai beta x omega
Sensei no Sensei alpha x beta (no smut)
2ban-me no Alpha alpha x omega
Arima wants to be an Omega alpha x alpha
Boku no tsugai wa Thoroughbred Omega alpha x omega
Ou-sama to puppy love alpha x omega
Okusama wa Alpha alpha x alpha
Omae no koi wa ore no mono alpha x omega
Re:birth by Asou Mitsuaki

Not sure if you like doujinshi. I thought this was good even though I don't know the original work.
Shingeki no Kyojin dj - UNcontrol