The hottest one has a warning. It's the vindaloo.
The mildest is the mango chicken.
For lots of them you can dial the heat up or down by varying the amount of chilli or taking the seeds out of the chillies, or using mild or hot chillies or a mild or hot paste and so on.
The biriyani you could just leave out the chilli powder and it would be as mild as a baby lamb having a nap on a spring day.