I mean, Coritans are able to breed with any kind of humanoid species
Its just that they are rough as hell with their mating rituials which would likely injure or kill any species that isnt a Coritan as they are less durable then them
celestials and bloodfiends (my version of celestials celestials, I mean. They are aliens that are 2 meters tall, have neon blue skin with purple or green splotches. They get there name from living on the planet celestia)