Actually there's https://kisskh.at/discussions/recommendation-forum
Haven't watched that many Thai dramas, but I give 10/10 for (all romance)
And 9/10 for:
55:15 Never Too Late (time travel, sci-fi, second chance, there's one ML who's a member of lgbtqia+ though)
Dhevaprom: Kwanruetai (romance, family enmity)
Enigma (mystery, horror)
High School Frenemy (bromance, adolescence problem)
Kleun Cheewit (dark romance, hate turned love)
Peaceful Property (bromance, horror)
Thicha (romance, revenge, human trafficking)