WiFi modules, how to install

If we have Debian Experts on the forum.

Since trying to install WiFi Modules can be difficult to the inexperienced. And some have found it useful to try to use WiFi Chips besides those from Purism. A list of modules, download and how to install would be useful.

Yes, I only meant the few WiFi modules which are both open source, and common to being desired replacements.

Authoritative introduction is within this link: https://wiki.debian.org/WiFi and how-to auto-install related firmware explained in this post: Making Wi-Fi 6 AX201 work in PureOS.