Anyone have any ideas on where I should go next to re-home a cat

Hey everyone! I am kind of at a loss with my situation. Several weeks back, my fiancée and I took in a kitty from her former roommate. If not for us, he was going directly to ashelter. We did slow introductions, but he’s not getting along whatsoever with our senior male cat. We simply cannot keep him. We’ve tried several shelters, including the Humane Society. No luck yet. He’s an extremely sweet and very much a people-oriented cat, just isn’t compatible with us. Do any of yall know off the top of your heads a specific rescue or shelter in the metroplex that might be able to be of assistance?