If I'm remembering correctly, someone at the summer summit mentioned working on / or being familiar with the Berkeley CA gas ban. A town here in MA is also considering a ban and wanted to get some feedback from Berkeley.
I wasn't at the most recent summit, but heard the story locally on NPR: https://www.npr.org/2019/08/05/745051104/give-up-your-gas-stove-to-save-the-planet-banning-gas-is-the-next-climate-push
There are lots of other news articles about it. If no one else has specific contacts, there should be enough names/positions within the interviews to find some contact info.