Oh, I was referring to progenitor seeding specifically. In terms of interbreeding, there's a few more prominent ones: Spock, B'Elanna Torres, and Alexander Rozhenko and B'Elanna's daughter (who are respectively 3/4 human and 1/4 human, showing there likely isn't an infertility problem like with mules [0]).

(Though I admit that the ENT example was certainly unique in the differing biologies)

[0] https://en.wikipedia.org/wiki/Mule#Fertility