I don't remember the title but I actually found one! MC got really close with a priest meanwhile her husband from previous life became the villain of that timeline (her husband is the archmage btw). I'm sure the priest was the male lead (I don't remember finished it).
the plot is like this: MC tormented her half brother in the past life so she could be the queen. but she regreted this and returned to the past.
so by that plot, I'm gonna check every title with "brother" on it

I've seen holy knights be the winning ML sometimes, but I don't think I've ever seen a cleric ever beat the competition. Plenty of dukes, princes and master mages, sometimes even merchant/info broker/assassin guild head/demon lord/spirit lord/god, but cleric seems like a perpetual supporting role. Strange when it seems there's a harem story out there for every type of winning girl.
Or maybe I haven't dug this hole deep enough yet, there might be depths to this I haven't yet delved into.