I’m not going to define “credible,” I’ll leave that to your judgment.

Inspired by the mention of Yes below.

I can’t think of any real examples off the top of my head.

Former non-original members of The Allman Brothers have played a few reunion shows as “The Brothers” and I would happily attend one of those concerts, but they didn’t use the Allman name after Duane died, and doing so would have been a pretty questionable move.