8.6Broken-chord accompaniment
You do not have to move strictly upward.
Try:
root – fifth – third – fifth
For C:
C-G-E-G
For Am:
A-E-C-E
For F:
F-C-A-C
For G:
G-D-B-D
You’ll notice this resembles Alberti bass, but you can place it higher, split it between hands, and alter the rhythm.