So I use a combination of Neo Forge and ComfyUI. Forge has an easier learning curve but ComfyUI gets all the new "hotness" almost immediately since there's so much custom nodes for it.

If you're on a Mac, I've heard that Draw Things is supposed to be pretty "batteries included" simple for image gen along the same lines as LM Studio.

https://github.com/Haoming02/sd-webui-forge-classic/tree/neo

https://github.com/Comfy-Org/ComfyUI

https://drawthings.ai