The first half of BGU is on rhythm and the second half goes into soloing.
So you’ve already got the basics of blues rhythm playing. “52 Rhythms” would be a natural extension.
“Strumming” would get you more into strumming chords in a variety of styles.
Continuing with BGU will introduce scales and soloing technique.
My advice is to always go where your interests take you.
And keep in mind that ALL of Griff’s lessons, regardless of objective, are RHYTHM lessons.
(The last example in “52 Rhythms” puts it all together and is actually a backing track used in Griff’s “Slow Blues Supplement” course.
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