Yeah on amethyst, you can pick your favorite emoji and put them in a list (or just have one). If you only have one it's a one click default, so I picked the melty face. If you have more than one in your list when you press the like button it opens a select view.

I'm not having much luck with snort or iris to be honest, so im primarily on amethyst and im getting in the habit of tapping like and zap at the same time to achieve both.

I noticed on another client that it's only the heart as an option. I guess it all depends. I don't understand why notes that I posted on snort don't show up in amethyst.