Groups where the members are close and get along?

I saw a post about groups that weren’t close or didn’t get along, so now I’m curious about the groups that really do get along. Even though it’s normal for members to have fights, are there any stories that show how close a group really is? Right now, a lot of 2nd and 3rd gen groups are making comebacks. Does this mean they get along well?

P/S: Aside from BTS, I genuinely want to know about other groups with beautiful, bonded relationships too :))