I actually built this for myself on my previous phone using Tasker. If you have root you can just set the charge voltage (basically redefining 100% as 4.1V or something to limit charge %) and current to whatever you want. It was especially nice to be able to limit the current to like 500mA while using Android Auto because GPS and data use gets the phone hot enough already. That phone's barely aged in the two years or so I had it.

On my current phone I use wireless charging overnight and the 80% limit and I think that gets me most of the benefits of that hacky solution without requiring root.