Angel #48 Sounds Familiar? and tune from Bubble

Angel #48 is one of my favorites from this album, but something about it sounds really familiar. The pre-chorus and the chorus especially sounds familiar. Song reminds me of Ghost town DJ's "My Boo" that was used for the Running Man Challenge (Youtube Link) back in 2016. I don't know if it's just this song that's making Angel #48 seem familiar. Considering they re-arranged Next Level, does anyone know if this song was also re-arranged or sampled from a different song?

Also, the "Ding-di-di-ding-ding Ding-ding-ding" from Bubble sounds like a familiar tune but I can't place my finger on it. Would appreciate your inputs.