Thanks to everyone who answered (including you D&B), my question really should have been which rooms allow 5 people in both studio AND 1 BR , HOWEVER I found the answer online so I now know.
What first I confused me was after seeing that there were some studios (like BRV) that do allow 5, but some 1 bdrooms (like CCV 1 Bedrooms & AKV Value 1 Bdroom) that allow only 4 despite being a 1 bedrooms...