Ailments with Crit

I am very confused about what counts as an ailment and how/which dot ailments benefit from crit.

is Bleeding an ailment? Like if I attach a bleed gem to power siphon and it crits does it cause a larger bleed.

also are dots from stuff like exsanguinate and reap ailments that benefit from their respective abilities that crit?

https://www.poewiki.net/wiki/Ailment

Poison, bleed and ignite are damaging ailemnts. Nothing else. Critical strikes increase the damage over time multiplier but is not a common way to scale ailment damage over time.