Celebrim
Legend
Now that is pretty complex...
I remember seeing taunting rules long ago (might have been a house rule thing) and thought it might have been in the 2e kits (there was a taunt spell) but since I explored a lot of games it may have been from entirely different sources and I thought it was more like early 80s .
There are taunting rules for Kender in the Krynn source books.
The above only looks complicated. What is actually going on is that there are four relatively minor combat actions with relatively minor benefits or edge case uses that have been rolled into a single feat to make the feat worth taking. It would have been possible to write a simpler version by picking one of the actions and making it more powerful, but doing that would have encouraged cheese that would have stretched the bounds of credibility regarding what taunting can actually do in a fight. As written, if you want to build a character that uses Taunt as part of a battlefield control strategy, you can do that, but it requires a fairly strong investment to do it.
The other thing going on is that I generally prefer broad to deep. If I went narrow with one single deep ability, then a character would have to rely on stunts (which puts agency in the DMs court) rather than something explicitly outlined in the rules to do whatever reasonable things that I didn't provide for.