ComfyUI has all the bells and whistles and is node based which is wonderful. In comfyui you can use any of these and more:

Flux has been very popular lately.

Pony is popular especially for adult content.

SDXL is still great as it has lots of folks tweaking it. I chose it to make a comic as it worked well with LoRas trained on my drawings. (article on using it for a comic here https://www.classicepic.com/p/faq-what-are-the-steps-to-make...)