Tom Katt flat-out became a preacher after retiring from porn (though he's made it clear that he's still an LGBT ally even if he now identifies as straight rather than bi).
People thought Markie More renounced his bisexuality when he left porn (the first time) after endorsing Fight the New Drug, but on social media he made it clear that he was still attracted to both men and women and showed a picture of himself kissing his post-porn boyfriend who he fell in love with after leaving porn. As for whether or not he actually became religious it's hard to tell since he was raised by ultra-conservative Mormons who kicked him out of the family after his brother outed Markie and his boyfriend while they were in high school and while he seemed to have at least some degree of reconciliation with them in his post-porn social media posts, Markie was also notoriously private about his off-camera life aside from the things that he chose to tell us and it's clear from things he said when he apologized that the head of Next Door Studios was abusive towards him and the LDS people behind Fight the New Drug clearly took advantage of his mental health issues (and/or possible drug-related issues) at the (first) time he left.
The same can't be said for Kyle Connors who did publicly renounce his bisexuality and went full-on MAGA when he left porn. He made social media posts with explicitly homophobic intent about how children needed to be protected from "groomers" with gay iconography and how the Lord saved him from his former lifestyle.
Over on the straight side, porn legend and overall daddy Randy Spears left porn after finding God, but that seemed to have been about religion helping him overcome his long-term drug addiction and that he didn't like the person he'd become by the end of his porn career rather than anything full-on evangelical.