

There’s a standard way to describe search engines, including the correct URL to use to perform searches, in a machine readable way (https://developer.mozilla.org/en-US/docs/Web/XML/Guides/OpenSearch), so I’m surprised that I haven’t seen any launchers that use that metadata. It’s how web browsers detect search engines. A launcher could let you type the domain/URL for your search engine and pull the OpenSource XML to configure it.
These seem to be the two most commonly supported distros by laptop manufacturers. Framework officially support these two distros, too (they have unofficial guides for a bunch of other distros though)