Memorizing complex poker range charts

Hi,
I’m new to memory training and was wondering if I could get some tips on how I should memorize 100 or so charts that look like the following

I’m thinking of using method of loci and at each position having a unique colors that represent each action then memorizing the range of hands for each action under each color.

Hi redlotus,

Did you work out a system in the end? How did it go?

I always had trouble working with range charts and usually just tried to remember the genral shape of the distribution of playable hands.