Although I use 2 of the 3 examples, the second one, 779x --> 579x is a real challenge for my fingers, and I never use it.
When using chop chords, I often default, when playing G, A, B, etc.(on the treble side), to make the 7th using only the 3 & b7 notes, e.g. 7523 (G) --> 432x (G7)
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