DECO*27 has a similar syntax that is sometimes seen used by boybands, and the number in those cases represents how many members there are in the band.
From what i have seen, it's mostly kpop bands, but funnily enough, since that's not my type of music, the only example I can remember right now is the Jackson 5
If you want a fun rabbit hole to fall into, look up the Hollywood side of this
Like for example how we have to use tiger sounds for lion roars now because it was used once for effect and it worked really well but now people expect that sound out of a lion.
... fignificant other?