Gem said:
first cut is reused from Kawakami's work https://www.sakugabooru.com/post/show/40635

0:00 - 0:01: Kawakami (reused)

2 last cuts aren't Shimojima
It's pretty unlikely that one of the Mouse animators did this, especially since Tokura is more of an AD and Nakatani was just starting with KA, only Hirofumi Onodera is left but I don't see really see him doing this. So excluding them, the only name in the list is Takeda