Actually, disregard my question - I decided to just do the Apollo Basic trial and view the Technologies in the Advanced Search.

It's limited to cloud providers, as you mentioned, and just a few other tools (only one or two being tangentially related to the tech stack data needed for the idea presented it my post).

It's a bummer, because I would like this product to already exist!

Very interesting. And the same with other technologies, e.g. what companies use Rust or Vue.js?