> I was not learning to name the key signatures

It was mentioned the person was trying to memorize all these with anki or something. There's actually no need. You only need to memorize 2 key signatures and the rest follow a pattern.

C major has 0 sharps/flats F major has 1 flat

Every sharp key is a half step up from the last sharp shown. G major has 1 sharp F#. G is a half step up from F#. In A major the last sharp is G#, etc.

In flat keys, it's the second flat to the right. Bb has two flats in the signature. Bb and Eb. Ab has 4 where Ab is the 3rd.

All minor keys are a minor third down from their major key. Of course, you have to look at more of the music to determine if it is a in major or minor key.

If you can remember that you can tell what any key signature is pretty quickly.