Stable Diffusion 2.0 was largely seen as a dud. Past version 1.5 you should be aware that the outcry of various artists against having their works sampled resulted in the 2.x branches trying to use less of these public sources. This means it has a more limited training set and likely more limited output variety.
If you are interested in trying Stable Diffusion 2.1, use this tutorial to installing and use 2.1 models in AUTOMATIC1111 GUI, so you can make your judgement by using it.
Here are 2 different Stable Diffusion 2.1 tutorials:
You might also try this tutorial by TingTing