During my many years of being a client, all of my providers have been gay excepting one. The exception was a bi man with whom I had some phenomenal times. We gave each other what each wanted, and he never failed.
But after the pandemic brought us some semblance of normalcy, I engaged his services on four occasions. Two of these times he had me "climbing the ceiling"--for he certainly "applied the wood" and had me in such a state of euphoria that I had to ask him to stop or to slow down. I don't have heart problems, but with the expertise that he rendered, I thought one perhaps would occur.
Shortly after those two sessions, he changed his sexual orientation on Rent.men to "STRAIGHT." I managed to see him on two occasions: the sessions were NOT the ones to which I looked forward. On one of these occasions I kindly addressed his status; he became offensive, and I ceased talking to him about this. I do know that his sexual prowess was definitely NOT satisfying; thus I ceased hiring him.
So, in response to the initial question: it's primarily Gay with me unless the Bi guy is interactive and meets my other needs/requirements for satisfaction.
* I've written about this in other posts but thought my response would be appropriate here.