The main bits that you want out of accessibility insights are listed at the top of the doc page here.
When using the tool you simply need to roll over your element and see what options are available to you:
Regarding number 2, I saw there was another request for this so I went ahead and put something together quickly. Currently its just in a branch if you could give it a try:
To install simply clone the branch, open a command prompt, navigate to the repository root and run:
pip install .
For the keyword you will now just need to supply your partial window_name (without any extra regex characters) and set ‘exact_match’ to False
Switch Application By Name | http://localhost:4723 | window_name=wel | exact_match=False