Classics is not canon to the OG Marvel series. So what they do there doesn't really tie in to the OG universe. It was a recently emerged splinter universe that was said to occupy the space of a GoBots universe and slowly replacing that reality.Classic Is an alternate Canon continuation. They have Major ties to the multiverse. G2, Classicverse and Regeneration One are all Canon, butt in different branches of the Marvel Comics Universe, so the Classicverse Is still a Marvel comics universe, as those stories are still in the universe's past.
Sinclair, my guy saying that the difference relies in the appearences of the cybertronias Is Like saying that each comic where Batman has a different suit Is another universe.
Tbh i personally see the DW Comics to be in the same universe as the G1 Cartoon as they fit perfecy, and we can give this universe a purpose rather than being a continuity that goes nowhere. (Ok this Is more headcanon, but Just to Say that i take what's show in the product than what the writer's intentions are).
You could Also Place Devastation too if you want in 2004 thanks to in-dialogue references. And for giving this universe a purpose.
None the less, Pete Sinclair says Wings Univese is a different reality.
For Dreamwave, there was an interview or smth where they confirmed it was a new universe and not Sunbow universe. I could probably find it if you want.
For Devastation, it is the best candidate to fit into the G1 cartoon out of the ones you mentioned. It is somewhat arguable. For what it's worth, there is a video from Gamespot or IGN reporting that Devastation takes place in the "Generations Universe" (could it be canon to the Combiner Wars show?).
Sunbow tie-in material that can easily be taken as canon:
* Madman Transformers comic (prequel to 86 movie)
* Rodimus vs Cyclonus tie-in comic (takes place during the 86 movie. There are some design changes for some characters from the 86 movie to sell the new toys, but I just chalk that up to artistic license and consider this canon)
* The recent Yolopark Cliffjumper comic with it revealing that Sunbow Cliffjumper survives to the end of the universe.
* Also, the live-action Powermaster Optimus Prime segments can also be considered canon. They were literally even a part of the OG show as Season 5.
Stuff that MAY be canon to Sunbow:
* Devastation game does take place in a G1 cartoon setting. Albeit I haven't seen any actual commentary from the creators.
* Mars Attacks Transformers crossover could be canon.
"SHANE MCCARTHY: It wasn't too difficult once I found the tone I'd like to use when approaching the story. It could have gone a few different ways but I really wanted to go for all out fun. The only stipulation that was given to me by Carlos was that it would be set in the G1 universe, so I figured we could take that a step further and make it a real Mars Attacks Saturday Morning Cartoons. Mixing the two properties was a gold mine for humor, so it was a real pleasure to cut loose and find the fun in all of this."