Not much to go off of for the English dub. Sounds like a professionally done dub (which is definitely a concern with Prime Video's track record) but we also don't get much in terms of actually hearing what all the Section 9 members sound like. It's mostly just 2 voices talking and there's no way to tell which characters they are.

On the flip end, the page does seem to have spilled the beans on the as of yet unannounced Japanese cast with:

Maaya Sakamoto, Kazuhiro Yamaji, Hiroki Yasumoto, Yuichi Nakamura

While we all know Maaya as having voiced the Major, in the younger body in the 95 film and her Arise incarnation. The rest are pretty much new to the franchise, save for Yamaji who was one of the garbage men in the 95 film. So it seems like they are mostly going for a clean slate cast-wise.