A subgenre that takes place in an alternate universe where there are different classifications of people – most commonly Alpha, Beta, and Omega. Each Omegaverse could vary by author and have different
rules.” This is a deep subtrope and there are some great in depth guides. Sierra Cassidy (an OV author) even has video breakdowns. (https://sierracassidyauthor.com/what-is-the-omegaverse) May also be referenced as ABO or A/B/O