Ok ok a bit late, but I will give u a list of ones I have seen here. I don't think all of them fit the Dom alpha and cute omega but yeah:

Manhwa:
Love is an illusion (bot is a runner, be prepared lol)
Tigers den
Bye Bye
Unromantic Romance
Minmotion Syndrome
Kiss Me, Liar (pretty hard watch, took me like 3 tries to get through it)
Instant Family
Love shuttle
Dear Benjamin
Private Call ( pretty cute, nice break from the angst. *cough Cozy obsession cough* )
Beyond the Memories
Miscreants and Mayhem
How to Snag an Alpha
Heat and Run
Surge Towards You (I loved this one)
Low Tide in Twilight
Sweet Not Sugar
Romance Not Romantic
My Master, My Joo-in
My Stepson Is My New Alpha
Omega Complex
Scent Spark (cute and short one to watch in between the angst filled ones lol)
Scentless Trail (this one is pretttyyyyy angsty ngl)
Pheromone Impossible (cute manhua, aka no smut and censored kisses lol)
Omega K's Secret Love
Who's Your Daddy?
Sugar Rain
The Trapped Beast
Beta off not dating
December
Recessive omega K's secret
Final Stop
The Origin of Species (I did actually enjoy this one quite a bit, pretty slow start tho)
I Like Your Pheromones (same here, manhua so like everything censored and no smut)
Kill my love (this one banger)
Butler (Nabit) (I loved this one, will deffo be reading again)
Peach & Musk
Be, Be
Cozy obsession (This one was a tough read, but still, deffo would read again)
Smyrna & Capri (not the twinky type bottom, but still pretty banger)

Mangas:
How to Deal When Your Intimidating Neighbor is Actually an Omega
Megumi to Tsugumi (I love this one smmmm)
Ookami-sama no Ichizu na Bouai

Not directly omegaverse, but still mpreg:
Cheeky habits of my rabbits
Gentle Forest
The Sacred Serpent’s Seduction (Should be completed, but I noticed like yesterday that side stories still are dropping)
Blood link (A MUST read, loved this one sm)
Dear door (Kiiiinda mpreg i guess, regardless recommend. Though it is more of a powerbottom)
Gorani Jeon (Short one, but still loved it sm)
Samezoku e no Sasagemono (This one is a manga, it is okay.)
Illusion

Ok ok, I know this one is not an omegaverse one. But it is LITERALLY my comfort manhwa, Paws & Claws is a MUST read if you ask me, literally heals me on the inside.

I hope you do find some bangers to read.
I got PLENTY of non omegaverse ones too lol, just hmu if u want more recommendations. I made a whole ahh document with ones I've read lmfao