Was watching some 80's videos on youtube, and

I believe the Allmans had 2 drummers at one time, along with some other bands of the '70s

and bands with Latin influence like Santana might have a conventional rock drummer plus various other percussionists

This is not including an act like The Beach Boys, who put Dennis Wilson out on stage but would often have a 2nd drummer offstage and miked since Dennis was so undependable

Grateful Dead

The Melvins had two drummers for a few years. It sounded awesome live. Here's a cool drum cam video of them in action LINK

You've never watched the Allman Brothers?

Lynyrd Skynyrd used two drummers for a while when the first reformed. And after Peter Gabriel left Genesis and Phil Collins took over the duties of the front man, they'ed usually have a part of their set that featured two drummers where Phil would take a momentary spot behind a kit.

King Crimson in the mid 90's had a double trio.

The easiest way to describe the Double Trio incarnation of King Crimson is to say it’s the 1980s Crim with two added members, although that’s an inaccurate account of how it came about. But the roster includes Fripp, Belew, Levin, and Bruford, with newcomers Trey Gunn (Stick and Warr guitar) and Pat Mastelotto (drums and percussion).

After the 1980s Crimson broke up, Robert Fripp nurtured his Guitar Craft school. Eric Tamm’s Fripp biography covers the Guitar Craft experience so well that I’m not going to bother writing about it, but I should note that GC was where Fripp began using the so-called New Standard Tuning, based on fifths instead of fourths. I should also say that the League of Crafty Guitarists’ Intergalactic Boogie Express is a truly amazing album. And finally, Guitar Craft is where Fripp first came across Trey Gunn, who eventually moved on to Chapman Stick. (And later, the Warr guitar, another tapped-fretboard instrument.)

Fripp and Gunn were part of a short-lived band called Sunday All Over the World (an album came out in 1991), and Gunn played with the Robert Fripp String Quintet, which also included the California Guitar Trio. It’s safe to say that Gunn was “in” with Fripp, if not an exact protege. In playing live with David Sylvian in 1993, they worked with drummer Pat Mastelotto, a pop-rock veteran. So the new members of King Crimson had already spilled live blood with the leader.

Why a six-piece? Mastelotto could provide Fripp with the “rocking drummer” he desired, leaving Bruford free to terrorize the rhythms as he wished. Gunn could find a middle ground between Levin’s low end and the Belew-Fripp guitars. It didn’t always work out so simply, but the expanded Crimson had plenty of arrangement options, to say the least.

38 Special might be the only band where I pictured what I thought they looked like and they turned out exactly that. Bunch of long-haired, bearded good-timers.

Adam and the Ants had two drummers, back in the era of Burundi beats.