Music Theory: Key Signatures in 1 Minute

A simply easy key signature chart (no circle of 5ths) that includes all of the relative minors! All you have to do is remember:
1) BEAD GCF
2) C major has 0 flats
3) 'a minor' is the relative minor of C major

My piano teacher taught me this when I was a kid. I have no idea what this chart is called. I had noticed through the years that nobody else seemed to use this chart. When I recently came across a note in my music theory book scribbled from a frustrated student ("Isn't there a faster way of doing this?" - next to the circle of 5ths), I decided to share this chart.

If you know what this chart is called, please tell me.

And no, I don't understand the circle of 5ths. I have my chart memorized and it is just what I need for now. : )
Background music is freebie. : )

If you have looked at my other videos and website, and are wondering why I put this seemingly out-of-place post about music theory: I used to be an actively involved musician. I did play gigs and had a good instructor, even taught a few students myself, etc, but ...didn't happen. Insert life, life, and more life. (complicated, decisions, things beyond my control, etc.) Currently, I am working on practicing my instruments at home daily (it's a goal) and studying a bit of music theory. Yes I have tried to join a group to play music with (oy was that an odd story). Yes I have tried transcribing (writing down other musicians' music so that they could have sheet music for sale since they were busy composing). It was fun, but...life (people can really stink sometimes)...so I guess I'm not doing that either. So now I just play music at home.

Shalom!
My Website: https://ideasfromthemaster.wixsite.com/hermits-reflections
Ytube link https://youtu.be/Bxzr7H6k4_Y