Open source is still so far ahead of midjourney it's not even funny. Like, a racist RimWorld mod author (Automatic1111) built a UI for stable diffusion which unlocks far more capabilities out of it than midjourney will ever have.
I find most of the community models for Stable Diffusion to be pretty poor. A lot of models made from merges, waifu only models, models made from very small training datasets, and still stuck on 1.5 while 2.1 is much better overall.
However you have the amazing LoRas for 2.1 that are very powerful. The community is a bit ignoring them, but I think the potential is great.
But MidJourney is a lot better at text to image and image to image for now.