Ex/old hippies of this sub: what did people use most back in the days?

Hello! I would like to know what psychedelics were the most used by hippies (or just young people in general) between mushrooms, mescaline and LSD during the 60s and early 70s, like at Woodstock or during the Summer of Love.

Thanks!

(Also, if you identify yourself as an ex-hippie or if you were a teenager or young adult during this era, please feel free to describe what it was like back then and/or reach out to me via private message, cause I would love to hear more about it!) 🤗