I'll add 2 more:

●  (The New) Treasure Hunt... The only consistant, redundant aspect of that show was Ameile saying "Yes I Did".  Otherwise, you couldn't really predict how they were going to award a prize or a Klunk to a contestant.

Good one. I’d add the original Gong Show.

My most recent binges from both digitizing VHS holdings of series' and catching up on digital content:
- Starcade: as a child of the 80s and a fan of Geoff's, binging the series was highly amusing yet comforting nostalgia
- The New Liar's Club: getting past the cheap prizes, it was a solid format with an entertaining regular panel that I'm glad bonusround.ca posted
- Cullen TPiR: really missing it on BUZZR Saturday mornings, I got as much joy from that block of 3 episodes as an adult as I did watching Saturday morning cartoons as a kid
- Go: Underappreciated series, each episode goes by so quickly. Not a perfect game, but KO was a solid emcee and it moved along at a good pace
- The New Treasure Hunt and Treasure Hunt '81: if I could acquire the whole series of the original, I would. Geoff was an ace in both versions and it's definitely my favorite Barris product

Nowadays: Recording Break the Bank from GameTV and watching the episodes back-to-back on Saturday or Sunday.

I have wound up with an absolutely ludicrous amount of Wheel of Fortune from the 90s into the 2000s in my own personal library, and I have been blown away with how insanely bingeable this show is, and how well it fits any level of engagement to which I want to commit. Ambient background noise? It's fantastic. Actively paying attention? It's a fun time. Works on any level in between too. With just enough funny, interesting, or weird moments to hook.  Especially with long streaks of consecutive episodes. (I'm missing like twenty total between 1994 and 2003).

(Related yet tangent: This show absolutely should never have gotten rid of returning champions. It's most engaging contestants rival or outpace anything Jeopardy has ever cooked up while the enhanced luck factor means it's never as much of a lock as Jeopardy superchamps often are, so you wind up more interested in following them)

I've found thanks to the GSN reruns that Regis Millionaire is pretty bingable. Easy to watch a few hours on in the background or whatever - easy to determine the level by glancing. I think the older GSN Lingo was also very easy to binge as well. Back before YouTube pulled the episodes, was easy to watch for a few hours. Ditto for Sale, Feud. As for Price, I think the showdowns take up a lot of episode time, and you get lots of wheel spinning as part of a long binge. The varied showcases of the 70s and 80s do make it more interesting.

I have found the daily 1.5 hours of Jeopardy and Masters to test my limits on daily Jeopardy! consumption. I find it harder to binge because I want to pay attention too much.

I agree with Dawson Feud, especially with long-running champs that Richard develops running jokes with.

In a similar vein, runs of champions on Sale of the Century are fun to binge as the stakes gradually increase. One Australian champ's full run from 1984 is on YouTube.