These are great - colorblind friendly with a uniform visual hierarchy. Great for continuous data.
These are for continuous data where you want to emphasize extreme values. The 2-color ones are not perceptually uniform, so be careful.
These are for continuous data where the mean/median is far less interesting than the extremes.
These are for continuous data where the extremes are quite similar, and it's the gradation in the middle you're interested in.
These are for categorical data.
These are for fairly niche use cases or are just for fun.