As the name of the emoji doesn’t convey the meaning of its use in different situations as it’s very context-dependent, there doesn’t seem to be a lot of merit in dedicating any time to making the long-press ‘show emoji name’ work on all mobile devices.
For those situations where you’re unsure, you can look up the emoji in the composer’s emoji picker for the name and/or use something like the Emojipedia site that @Richie linked further up to get much more info on what it is and what it’s commonly used for.
I’m going to close this topic off as it’s not something we’re looking to work towards.