Icon meaning beside some contacts in Google Messages?

[ChMaVa1882]

Anyone know what this lil icon is on Google Messages? Sum of my contacts have it and sum don't.

[SpudMan9510]

It's for rcs messages

[LongHiker · Accepted solution]

@ChMaVa1882 It's an indication that RCS is active for that discussion. 

More info on RCS -> https://support.google.com/messages/answer/7189714?hl=en 

[meself]

The user has rcs enabled