There are two main schools of thought for the Original Trilogy: Those seeking absolute purity of the original releases, and those seeking modern polish.

For the latter, as Nev has mentioned, you’ve got Adywan’s Star Wars Revisited, which are “the special editions as they should have been”. They’re an absolutely meticulous and painstaking depth of polish.

For the former, you have Harmy’s Despecialised editions, which seek to present a restored version of the movies which you could have reasonably seen in the cinema in 1977. And you also have the 4K series (4K77, 4K80, 4K83 for each of the three OT movies) which seek to present that original vibe carefully upscaled to 4K.

I can’t much speak to prequel trilogy three-in-ones, other than (and due to) a personal belief that you’d always lose something that way, and that there is value in the prequels when a layer of polish is applied, and that supplemental prequel content like Tales of the Jedi and Clone Wars are also valuable both on their own and to recently released content.

As for the sequels, there’s an excellent loose-but-related trilogy comprising TFA Starlight, TLJ Rekindled, and TROS Ascendent, which many hold up as the pinnacle of sequel tightening. TROS Ascendant is probably the single fan edit which gives you the most value-add compared to the original movie, and has been a spectacular multi-disciplinary collaboration.

Others are generally more of a matter of personal taste, but there’s a variety of great TV-to-movie edits of recent Disney TV content, of various lengths based on how much you want to preserve. They’re generally in the first few pages here.