Few different pages I'm struggling to pick a schema for.

1. A product page with no pricing or reviews. It's a very expensive medical machine so people need to call up for quotes.
2. A general home page for a website that sells medical machines.
3. A page which has training events listed (and links to a website where you can book) but no individual pages for each event, so I can't add event date to the schema. Events also change regularly.
4. A page that introduces a type of machine (shockwave therapy machines) with general information about shockwave therapy and links to product pages.

Advice would be greatly appreciated!!