They don’t really fit into the main series overall, but The Runaways and Cloak & Dagger haven’t seen much editing, but could work really well as Wanda buildup, as both build up some of the Darkhold mythos.

For recommended edits, whether of watching or for research:

Spence’s Falcon & the Winter Soldier is about as seamless as you can get for an MCU TV-to-Movie edit, to the point that I forgot I was watching an edit.
Thor: Odinson? and Thor (2): Convergence are both fantastic, and raise the early Thor movies up quite a bit.
KLRspach’s Agent Carter: The Movie is supposed to be a pretty solid edit of season 1 of Agent Carter.
I know Forbidden Marvel’s done edits for Daredevil, Jessica Jones, and Iron Fist - can’t speak to quality as I haven’t seen them, but I’ve heard good things. Might not be in-scope for what you’re looking for here, though.
Moon Knight: Fractured and Loki: Journey into Mystery have been recommended to me. IMO they both run bit long at ~3 hours for Loki, ~2 hours 40 minutes for Moon Knight.

I’d also recommend my own edits in for Hawkeye, Ms. Marvel, She-Hulk(which has a lot less Hulk in it than the series itself fwiw), and Secret Invasion(which is a fairly radical change), but note that I’m obviously biased in that regard 😛 All try to stick close to the original content in theme and story, with the exception of Secret Invasion.