A method includes displaying a message within an interface of a group-based communication platform on a device associated with a user; receiving, from the user, a selection of a first reactive emoji having a first skin tone for display in association with the message; and in response, displaying a first instance of the selected first reactive emoji having the first skin tone in a first grouping with at least a second instance of the first reactive emoji having a second skin tone different than the first skin tone, wherein the first grouping of the first instance and the at least the second instance is displayed in association with the message.