Most of the dramas you mentioned are some of the ones, i totally dont want to watch again. The ML were such jerks, especially in She Was Pretty. But there are some dramas that have very likeable male leads. Here are some
In time with you (Taiwan)- he probably is the realistic nice ML in asian drama creation. He is rightious, helpful and pretty upstanding. Especially with the FL who is his best friend.
From 5 to 9 (Japan)- this one is one interesting drama bevuse the male lead is pretty nice and funny. He is a buddhist monk who follows the girl around cause he likes him. It sounds like a weird plot, but its pretty funny and interesting dynamic
Reply 1997 (Korea) - the ML is not the usual jerk of asian drama yore, he is more of a little standoff-ish type of guy, and i think he acts that way because he wants to be seen as cool but he doesnt have a mean bone in his body. But more than that, the best thing about the guy wanting to act cool, is that the FL will not stand for it. And she will get the upper hand in any and all situation.
Across the ocean to see you (China) - male lead is super nice that he sometimes becomes borderkine pushover type of character. But he really has the best intentions for his job, his coworkers, his famiky, his friends, his irritating boss ala love ineterest, and evem his exGf
Additionally reply series male leads are quite nice, so check out reply 1994 and reply 1988. Also try Glorious day, Kimi no todoke, Love Around, smile you, we married as a job, Hogu's love, My Queen.