The New Avengers from Bendis's run know who Peter is, but Janet wasn't on that team because she was believed dead at the time (she was really in the Microverse, which the MCU calls the Quantum Realm due to Microverse being connected to Hasbro's Micronauts). And obviously the Fantastic Four and all the spiders do. A lot of people are in on the secret, but I don't think Janet knows Peter's identity.