I didnt yet try other companions, but i presume they may react the same.
In my solo playthrough I avoided everyone, only Shadowheart appeared in camp. Wyll died during the gate fight, Lae'zel was mentioned in journal as having died trying to find her people, and Gale and Astarion never showed up in camp or anywhere that I could see (I avoided the areas where they were supposed to be until some time had passed, they were not there later.) Perhaps they may make surprise visits in a later act.
