I don't know if they're available outside of growing them yourself, but there are several no-heat chili cultivars available (Coolapeño and Habanada are two I've grown myself). Personally, I thought I'd get more use out of them, but jalapeños really aren't that how to me and I stopped growing them after a couple of seasons.
If they aren't an option, then I agree that Poblanos or Anaheim/Numex are the way to go.
Sent from my SM-G975U using Tapatalk