The Thompson Twins---- No one named Thompson. Don't really look alike. Three of them.

Barenaked Ladies---- All men. All clothed.

Deepspace 5 - has 10 members
Jurassic 5 - has 6 members

Yeah, yeah, I know. Nobody else here has even heard of Deepspace 5 and possibly not even Jurassic 5.

Jethro Tull. The band has no one in the band named after the 18th century agricultural inventor of the seed drill.
Pink Floyd. No one in the British prog band was named after two American bluesmen Pink Anderson and Floyd Council.
Coheed + Cambria. The prog metal band was in fact named after two fictional figures the band came up with as part of their own science fiction series.

10,000 Maniacs, there were only five members in the band.
Ben Folds Five, the band was only a trio.

Ed.

Marshall Tucker Band, nobody in the band was named Marshall Tucker

Statler Brothers, nobody named Statler and only Harold & Don Reid were brothers.