My only problem with Krofft shows, as I mentioned in another thread, is that they ended up recycling plots and such way too much in their work, to the point that they were making carbon copies of themselves.
Out of the original shows they did, both The Bugaloos and Sigmund and The Sea Monsters stand out amongst the others, because they were the only ones that were different: with Bugaloos, you have a group of singing humanoid insects who are constantly pestered by a crazy old hag who wants to be a rockstar, but can't sing to save her life; and Sigmund involves a "two-world" scenario, with a sea monster being taken in by a pair of brothers in the human world, while Sigmund's family back in the sea monster is like a watered-down puppety version of All in the Family (both Sid Krofft, and producer Si Rose even said that Sigmund's family was based on the Bunker family).
I think LOTL stands out, mainly because it's their longest running show (three seasons, whereas the others are usually just one), and because of it's dramatic and scifi nature.
But, let's look at this:
H.R. Pufnstuf (1969-1970) is about a boy who ends up on the magical Living Island, and tries to escape with the help of the islanders, while eluding an evil witch.
Lidsville (1971-1972) is about a boy who falls down a magician's hat into Lidsville (the land of talking hats), and tries to escape with the help of the Hat People, while eluding an evil magician.
Land of the Lost (1974-1977) is about a family who ends up in another dimension, and tries to find their way back home to the real world, while dealing with strange creatures like Pekunis, Sleestaks, and dinosaurs.
The Lost Saucer (1975-1976) is about a boy and his babysitter "abducted" by two futuristic androids, who try to get them home, but end up taking them back to Earth during different time periods (from the past to the future).
Far Out Space Nuts (1975-1976) is like the twin of the above mentioned: two NASA maintenance workers accidentally launch themselves into outerspace, and try to get back home, but keep crash-landing on different planets inhabited by different strange creatures.
Then by the late 70s, they had all different kinds of variety shows for the cast of the Brady Bunch, Donny and Marie Osmond, Barbara Mandrell, and others.
Of course, there was the lesser-known D.C. Follies from 1987, which was really interesting (though a bit of a knock-off of the U.K.'s Spitting Image): sort of a cross between Cheers and SNL, with puppet caricatures of that time's popular celebrities and prolific politicians.