A very strong cleat/dovetail hook and rack combo.  I have included 2 different types of hooks to use with the rack:

 - A simple French cleat style hook for rapid hanging and removing of the hook

 - A slide on French cleat + channel on the underside to keep the hook securely on the rack.

The same track can be used with either set of hooks.  I like the more secure version for hanging often used things like clothes and hats, and the simpler French cleat for temporary things to hang up.

The hooks should be pretty strong, but I haven't tested their limits.  All edges are filleted for protecting any clothes from excess wear, and the hook itself has a small curve to keep any items secure.

Supports aren't necessary, and the track is 250 mm long so you can fit multiple on a single build plate.

Track is secured to the wall with 3 counter sunk holes.

The print profile has been plenty strong for me to hang any of my clothes on it without fail including heavy work wear and outdoor gear.

Pictures show Bambu Wood PLA, and Bambu Marble PLA which both printed without any issues at all.

If you need it to be stronger, you can increase the wall count for the hooks, or even reduce them if you need some fast but weaker hooks.