How about Italian Wax peppers? Those don't get quite as hot as the Jalapeno.
This has been a banner year for peppers here on the left coast, hot and dry, just how they like it. Don't know how I'd get them to you, but I got about 6 qts worth in the cooler right now.
this is what they look like, the tiny ones are mild, the middle are nippy, the orange one looks like a Habenero, but was just a bit hotter then a Jalapeno, but had good flavor
this is what I picked Sunday night, I pickle mine. I try and do 48 quarts a year, that will hold me!
these run 2-3 inches when they are at the point of getting hot. the tiny ones are maybe an inch, and taste like fresh peas, right out of the pod.