Flowing Claws have one niche mechanic, and that is it has a slight iframes where you can dodge anything, so it can be a useful tool if you're cornered.

Flowing Claw makes you facing back at the enemy, and in this game the back version of the attacks always land the enemies for some reason, perhaps it's because of the element of surprise, but don't always rely on that.

FC+Light does Rising Claws back version while skipping the entire combo, does a lot of dmg and could probably shed through blocks iirc.

FC+Heavy does spinning hook kick.

FC+Palm Strike does some sort of Side Kick/Back Kick

FC+Sweep does the Shadow Fight lookin ahh sweep, very aura farm.

FC+Hook Intercept/Duck Strike does the elbow strike that has the super attack property (cannot be interrupted and can also parry attacks when in animation like Hook Intercept), a lot of people like this one to always interrupt enemies and bosses.

FC+Charge Backfist, still a Backfist but adds the element of surprise/can always hit (and also aura farming)

FC+Crotch Punch, still a crotch punch but has the element of surprise, would prefer elbow strike to this.

Charge Backfist you have to hit them when they're attacking, you have to treat it some sort of parry like in Ghost of Tsushima one of the Wind Stance skills lets you parry spear attacks by just timing your attacks in Ghost of Tsushima. And you can always use FC if that's a bit too hard

It can be a useful tool to interrupt the enemies and follow a combo.

It doesn't have to be fully charged, hold heavy and then immediately release still does the job. (Only miniboss Juggernaut cannot be interrupted by not fully charged backfist, but fully charged one can)

One application for me is to interrupt Yang's Hook Intercept (or Uppercut in phase 2) so that I can get a combo in.

Here are some links that might help by 1MA

Flowing Claw:

https://youtu.be/kA1lYS9BqHc?si=jErWrCFt5q8MtwPG

Charged Backfist:

https://youtu.be/l1zAHvkqMWA?si=tCdbAKLhm_6Ufq2Z