Mlp lifespans?

Has there ever been any discussion of which species has the shortest lifespan vs the longest (excluding alicorns duh)

Specifically which of the main six would die first of natural causes/genetic predispositions

I feel there’s different ways to go about this ex pegasus strain of flying/atmosphere of living in the clouds or unicorns drained by magic use or capable of preserving their health, earth ponies by injury/disease or weather extremes

I lean towards pegasus < earth < unicorns but can be swayed :)