Now that I'm completely hyperfixated on the Brawler, I've made these reference cards to help you (and me, mostly) to remember which skills tier up which innate strength buffs. True, if you just rotate through your skills you eventually hit all of them but if you want to be more precise this could come in handy.

The Fulcrum (blue line)
the Maelstrom (red line)

These are formatted to fit iPhones best.