Omegaverse is an alternate universe in which Mpreg is possible.,there are 3 main roles: ⍺, β & Ω
⍺ - dominant & able to impregnate Omegas. Male Alphas usually have a knot when aroused.
β - subordinate to Alphas & may or may not be able to impregnate Omegas
Ω - generally lowest on the hierarchy. Male Omegas are self-lubricating & can become pregnant
Each Omegaverse has its own variations depending on the writer .
Fluffy ABO -
if U LIKE THE LIST THE PRESS THE BLUE RECOMMENDATION BUTTON
These are BL that have a lot of smut scenes but are also really cute or really funny. They're all stories that are generally light, fun, sexy reads and show a loving relationship between the main couple.
For more pure fluff, here's my Cotton Candy list: https://www.mangago.me/home/mangalist/995605/
A list for BL with a focus on plot aside from romance.