Thanks @NateDhaliwal . I tried that out but when I go to /chat/api/channels/:id/messages.json it only shows me the same 5 users which are showing in the UI with no way to get the others (see screenshot below).
Pinging @j.jaffeux from that API thread in case he knows how to do it. Very frustrating to not be able to see who responded / reacted to the message as we have no way of contacting the people who expressed interest / requested to be contacted.
