I’d like to recommend some novels that fit this list.

-Death Progress Bar: Very mature and supportive ML. He helps the MC grow career wise and with his family matters. The couple is tooth-achingly sweet. 

-Tian Guan Ci Fu: Hua Cheng is one of my absolute favorite Male leads ever. He’s an interesting character on his own and there’s not an ounce of that typical possessive/immature type of ML. He’s very devoted to the MC and respects him in all aspects. Be warned though, pretty angsty story in some parts but happy ending and constant sweet moments throughout with the CP.

-Mr Melancholy Wants to live a Peaceful Life: Best husbando!! He’s black-bellied but absolutely adoring of his husband. A well-formed character and we see the CP’s bond deepen in the story as things are revealed. 

-Don’t pick up boyfriends from the tr*sh bin: Quick transmigration type story where the ML is the system. He’s pretty kind and respectful of the MC which I liked. The CP also have an interesting backstory. 

I’m a sucker for stories where the ML is respectful and the CP constantly shove dog-food in everyone’s faces :3 

Though all these novels have pretty well-written plots too.