I think James Reilly must have been Catholic because before him, all the Horton’s were Protestant. The Bradys were Catholic but they were the only ones.
They have had a couple of Asians (the girl on the island, Lucas dated one briefly) but not in any major roles. And, you’re right, the gays they’ve had on were jokes.
I’m really surprised that some equal opportunity group hasn’t gotten after them for this. At least the Hernandez family is a step in the right direction.