Well logically, you wouldn't call a group of 8, a group of 7, you could, but it would be confusing, maybe they could have like a secret team or member?
I think we had this discussion before, but if not…
Both are kind of ehhh names. Team names should be based on the theme of the story or as a conveyance of plot. A rule of thumb: try to ask why they’re a team in the first place? What links them together? And what does it mean for them?