Sakiko Uda was char animation sakkan, mecha animation sakkan and separate KA so it's hard to image she's not in here somewhere as it's the only action scene of the episode

Mutaguchi is presumed for 21-end-- looks like his animation, there are also some beautiful stills after that part but it wouldn't be appropriate to include sadly

Uda til 0:19

I'll remove the artist unknown then, that cut in the middle is prob Mutaguchi