For people who hate being cold or don't mind some extra weight on a sleeping bag there is Tenier Industry US Military MSS sleeping bag
https://wildproofgear.com/best-sleeping-bag-for-hammock/
Temp rate: -30+50
Weight: 10 lbs
Fill: Synthetic (very fluffy bag)
I haven't tested, but I'm sure it's more durable than any other sleeping bag for the price or even more.
It's super heavy, but performs well in the cold weather.
You can find something cheaper, more light weight or with pretty design, but there is no necessity to pay for features you don't need at all.