Hi @odkchandra,
Welcome to the community! Please take moment to introduce yourself on the https://forum.getodk.org/t/introduce-yourself-here/ topic.
Some time ago @LN has posted this Python script to update submissions of a form with an AI-generated transcript of its audio attachment(s) that covers some topics on your list and also bring the opportunity to automatically transcript the audio files instead of having dedicated staff doing so.
Using the same approach you could also send this transcriptions to other AI models to get deeper automated analisys. 