Looking at the data in my node, here's the list of "client" values seen in all reactions (kind=7 notes) my node has seen:

astral

BIJA

coracle

gossip

nostr_console

Since well-known client implementations like Damus aren't listed, I take this to mean that it's uncommon for client applications to tag their reactions.

To make a long story short, I can't tell from the data alone where the hamburgers are coming from.