I was intrigued, but it was not to last: none of those high-caliber bands’ members in their respective groups are high-caliber, about half of them not even having a Wiki page. These are guys who have gotten their turn in iconic bands decades after the bands’ peak and relevance.
TLDR: do also-rans from famous band’s twilight years a supergroup make?
That would be a “featuring” or a collaboration, AIUI.
I would say implied in prior depictions of what we expect of a “supergroup” as having its own name is that it was created as a new project not just a preexisting one adding individual members who happened to already have career success elsewhere.
What we may be seeing is on the one hand hardly any more supergroups as such (as opposed to collaborations or team-ups) assembled of current top-tier marquee headliners (*); and less attention being paid to the “super” part and letting the new groupings just stand or fall on their own.
( * Yeah, “oh that one that joined after the first album but before the first tour, s/he played bass for Teeming Millions between 1997 and 2001…” may or may not make the threshold, depending on how recognized/respected s/he is among the peers and the public.)
Not IMO. If you tell me that there’s a group featuring a former Judas Priest member, and it’s Rob Halford (or maybe Glenn Tipton), then that might be a supergroup. OTOH, a group featuring a former Judas Priest member who played bass on two albums and a couple of tours…very likely not a supergroup, unless the other members are actually household names.
As i mentioned up top, Prog groups form supergroups quite frequently. My favorite of them is Flying Colors. They put out three very good studio albums and three live albums. They have come together periodically then go their different ways. To fit into their busy schedules they put together a short tour for each album. I’ve been lucky to see them when they played NYC. Truly a great experience each time. For a group that isn’t together all the time they are incredibly tight.
Fotomaker.
They were a conglomeration of members from the Rascals, The Raspberries, and some other group and musicians I don’t recall the name of.
If you never heard of them it’s because they cranked out 3 sub-par albums in a little over 2 years (with weird, almost creepy album covers), refused to tour to support those albums and therefore got virtually no radio play. Only 1 song on all three albums charted and it peaked at #63. What the heck their objective as a group was is beyond me.