TBH I don't think there's a 100% visual BG out there. There's always this one members that just ruins the streak.
Well, someone's got to sing those songs.
SVT + GOT7 are the closest imo
SVT: delete Seunghkwan and you have no visual holed
I use the middle two (strictly in terms of visuals and not other areas e.g. talent/dancing -that's another discussion)! The last one is serving Seolhyun and the first is not doing much for me.