Gautama is the only one I followed through the winter. I had feared disaster after finding no eggs last year and just two caterpillars, one of whom died. But it seems the females just laid their eggs in different places from usual during the heatwave of July-August 2015.
Kisāgotamī and Gautama are about an inch long. Kanthaka and Śuddhodana are a little smaller. Rāhula and Svapna are too high in their trees for me to be able to judge size accurately.
This was Kisāgotamī yesterday, looking all grown up: