confirmation: https://twitter.com/T35endou/status/1502308686328320003?s=20&t=O9C7rgmLbIoKs6KuoiU7Ww

Masaaki Endo:
そうです、ここは僕の原画ですね、この動画では前半は一原でした、作監さんの修正後に２原さんにお願いしました、たしかここの作監は堀内さんだったと思います、最後のカット別の原画さんの担当で桝田君がエフェクト作監で修正したものですね。

Essentially, the first half is Masaaki Endo's LO only, Hiroyuki Horiuchi was the animation director, and following his correction it went to a 2nd KA rather than returning to Endo. The second half should be Masaaki Endo's LO + genga since he doesn't mention it, and the last cut is a different artist but the effects are redrawn by Hirofumi Masuda.