All of them. return "lifts" a "plain" value so that it becomes a "monadic" thing. As far as I can see, this has nothing at all to do with returning a value from a function.
Right, but I have preconceptions of the word "return" that have nothing to do with programming. I'm fine if you want to think of it as "returning to the monadic environment."
That is, in English, you can return to things just as easily as you can return from them. I may have to forget some of the things that are common in other environments. But to use a word that has meaning outside of programming and to decry that you have to lose all preconceptions of that word, implies heavily that it was named poorly.
Even within programming, using a word in a way that is completely unconnected to the ways it is used by everybody else is... let's say it's not very useful if your goal is to communicate.
