An example of using just a few shapes to play a variety of chord names.
Barre chords are at least two strings, but do not have to be all 6 strings.
Having smaller shapes like these under your belt allows you to construct other chords, too.
The worst kind of books (for me) are the 1001 chords kinda books.
You can not remember all of these.
You can not catalogue these in your mind.
To much, too vague, to irrelevant.
These small chords are what make all the other chords.
If you understand these smaller ones, then the rest become easier.