EmojiReact vs. Like w/ content?

Hm... FEP-c0e0: Emoji reactions details two ways to federate an Emoji reaction:

  1. EmojiReact activity
  2. Like with content (as opposed to a regular Like, which has no content)

In testing, I noticed that misskey (or at least, the site I was testing with, birb.space) sends the latter. I don't know what sends the former, and if NodeBB were to start federating out EmojiReact, would it be broadly understood?

Perhaps I should federate out both at once.

cc @silverpill@mitra.social