>>533096023 out of the 9 Screenplay writers stopped appearing in any staff listings post SM:
Ayumi Sekine
Masahiro Ōkubo
Naoto Hiraide
11 out of the 20 responsible for the SM Storyboards vanished as well.
14 of the 25 Assistant Directors
29 Animation directors of the 52 weren't listed post SM
Total count: 57 out of 106 Staff members weren't involved or appearing to work for the anime after SM
Outsourcing Moments:
SM124 - 3 out of 4 Animation Directors in total
SM145 - K-Pro, 6 ADs in total
Arora "League" Count of Animation Directors:
SM128 - 1
SM129 - 1
SM130 - 1
SM131 - 2
SM132 - 2
SM133 - 2
SM134 - 1
SM135 - 1
SM136 - 2
SM137 - 2
SM138 - 1
SM139 - 1
SM140 - 3
SM141 - 2
SM142 - 1
SM143 - 2
SM144 - 2
And again, I underline: I don't know or didn't looked up if they were reallocated to other Projects or if they stopped working for OLM afterwards. Take that Information how you wish.
Might do a excel with the names for anyone who wants to do their own digging.
If I got any of it wrong, feel free to correct the numbers.
TL;DR: From over 106 Staff members, 57 stopped being involved with the Ashnime, all referring by the documented staff lists and websites.