I would just make them variants over larrow/rarrow/darrow (https://matplotlib.org/devdocs/tutorials/text/annotations.html#annotating-with-boxed-text), by adding some parameters to the constructors, e.g. head_length, head_width, if possible keeping them consistent with the similarly named parameters in the corresponding arrowstyles?

That may indeed be a good idea which removes the naming issue if nothing else. A bit more tedious to use, but would for sure enable it (an example where this is obtained can be a nice addition as well, as IMO it looks better).

Marking as good first issue, but medium as there is a bit of argument handling to be done, including updating documentation and add an example. Bordering easy though. (Go with the suggestion in the comment.)

Isn't this more like making https://matplotlib.org/devdocs/tutorials/text/annotations.html#defining-custom-box-styles a first-class style?

That's also a way to do it, but I'd rather go with the "generalize larrow/rarrow" route.

Hi, I am a first time contributer to open-source. I went slightly on my own direction when creating this feature. Please let me know if it is all right, or if I should pursue an option with more flexibility in setting arrow head dimensions.

Hi. I'm a first-time open source contributor and I'd like to know if this issue's still open? There seem to have been a few PRs attempting an implementation, but none of them seem to have been active in the past year and nothing seems to have been merged.

#24774 has stalled but is generally on a good way. You are welcome to take over.