Your doc looks like the most comprehensive list of helpful photo angles anyone’s developed so far! You mentioned you referenced various forum threads already but I’ll link the main ones here in case anyone’s searching through threads in the future:
- Photo taking recommendations by taxon?
- Photographing for optimum ID
- Useful things to photograph/document
- Identifiers, what parts of organisms are helpful for identification?
I also just found this one with photos from this wiki:
https://www.bcinat.com/_files/ugd/f82a97_911b2967870f4e4e9d97472f547d1a41.pdf