Civ/Build order for fastest possible castle?

Hi - I'm interested in trying to achieve the shortest possible castle time, regardless of long-term detriment (this is purely for entertainment). Which civ and build order would you recommend? I'm open to abusing the market in order to decrease castle time too. My record castle age time is around 15:30 and I'd like to figure out how to bring this down.

For instance, I'm thinking maybe Mayans (extra vil) or Aztecs (gather bonus) would be good candidates but wondering if there are better ones to try this with.

Thanks!

Edit: planning to do this on (unranked) black forest and/or Amazon Tunnel