Any specific mission editor or do you mean the mission type mods? What cloud mod would you recommend?
I'm talking about the Mission Editor that JJJ65 created. Sandbagger's mods page doesn't appear to have the latest version. To get the latest version (1.9.0) use this link to the forum page - link
I use the Optional Clouds Mod that BuckeyeBob made. The latest version (3.0.0) is available here - link
I also recommend BuckeyeBob's Historical Weather Mod 2.02, which is available on the same page as the clouds mod.
Just to say that if anything I host is not at the latest version, it's because the author has not updated me.
Some of our authors post their work separately, which is fine.
However it does mean that those used to downloading from the site may not always get the latest.
As there can be interaction between certain mods and the original WOFF files, I never update a mod unless the author contacts me first.
That way I know the mod has been tested and won't effect the WOFF files.