Do I get a license for hardware schematics and board layout and other aspects besides the bootloader? Where can I find a license in writing? If a license is not provided, I can't do anything with it besides hobby work.

Here is the schematic page but no mention of a license: https://www.pjrc.com/teensy/schematic.html

This is NOT open-source. It is visible-source.

Please note, I am not demanding an open-source license. Closed source projects are totally fine, I feel absolutely no entitlement to get stuff for free. I am just pointing out projects that are closed-source but disguised as open-source, thereby taking advantage of the hobbyist community. Paul may be a cool guy, but objectively that doesn't change anything.