This would depend on the exact use case. Feeding in the invoice directly to the model is - in my opinion - the best way to approach this. If you need to search over them, then directly embedding them as images is definitely a strong approach. Here's something we wrote explaining the process: https://www.morphik.ai/docs/concepts/colpali
A serious problem for many accounting start ups who so far faked it till it will work. In other words, they still need to do more manual labor than they thought. They will never be profitable and it will take years, if ever, until AI will substitute the local accountant.
There are rules for RoW and there are rules for the USA. Astonishing that the G7 falls in this trap again and again (for example Basel III). The US was a major driver in pillar 2 but won‘t adhere to it. Probably companies will restructure their organization to have two streams and exploit it. Despite GILTI, some US companies have low ETRs.
Quality is determined by a combination of network, reputation, and results, not your Alma mater. Search for a securities or criminal defense attorney, ask around, see if where they got their diploma plays into the referrals you get.
Unfortunately other banks, too. Not something to mention specifically in this case. We must admit that banks have gone too big and need to be split up in the future.