Scarcer than Hen's teeth. Chupetinha, Aji Limo, Aji Charapita would be the closest in the 50 k range.

You can control the heat a fair bit by limiting stress, which would mean shade cloth and frequent watering in a fairly well-draining mix.

Capsaicin production is put into high gear as a stress reaponse, and I have been amazed at the difference between peppers from the same plant when I let the leaves wilt before watering vs daily watering. Also a huge difference between inside and outside plants as there is no UV radiation from my grow light indoors.

Just letting you know since you may need to try controlling plant stress to get the level of medium heat you want.