See a list of non-Buddhist female renunciants in this other thread here.
For a collection of sutta quotes regarding the most restrictive rules and how they were not applied by senior arahant bhikkhunis in the Buddha’s time, see this thread here. It seems the rules didn’t exist, or must have meant something else entirely back then.
There is also the Buddha’s advice to the Sangha shortly before his passing in DN 16.
Desiring to do so, Ānanda, the Community after my passing away, can abolish the minor and subsidiary training rules.
The minor rules weren’t meant to be fixed for his entire dispensation.