I don't think we need to recreate definitions here about touring as they are pretty well established.
Supported means someone, or some group, is participating in the tour. Usually leading it, setting up accommodations, and providing a support vehicle. Some tours don't have a vehicle but the leader acts as a group mechanic.
Self supported means you take care of yourself in those regards. One can access stores, cafes, hotels and bike shops but you make those calls.
A variant of that is carrying very little gear, eating in cafes and sleeping in hotels/hostels etc... That is called credit card touring but is still self supported if the participants themselves are making all the decisions/arrangements.
If you carry most of your food and supplies with you because of remote locale/lack of services it would be called expedition touring, assuming it's more than just a short trip. If it's shorter you would call it bike packing.
A very short trip used to just be called an over nighter but recently two terms have been popularized. The s24o (sub 24 hour) or micro adventure, though over nighter fits just as well.
Those definitions cover most of the spectrum.
Last edited by Happy Feet; 11-09-20 at 01:14 PM.