I am going to say that this type of resource does not exist in LA. Your best bet (and it sounds like you have already done something similar) is to go to Represent.LA, get a list of everyone you want to talk to, look them up, and then dial for dollars.
Everybody and his dog wants funding in LA. it is a very very noisy scene here. I can't imagine any investor even respects an investment broker out here. It's the Wild West.
Your only real option is to contact investors directly and begin the mating dance.