I have been thinking that I might have to go back to camping given the times we live in, but being small and getting on a bit, I really need to keep the weight down. My current sleeping bag, though good in many ways, is heavier than my new tent.
I have the same issues.
I have a 300gsm bag that is pretty good, but does not compress too well and is weighty.
I also gave a very cheap 200gsm bag that is light and compressed well, so might try taking two of those as the total mass is probably less.
I also dislike 'hoods' on sleeping bags, can't see the point for the type of weather I would camp out in.
And 'mummy' bags are are just horrible.
Also worth knowing that there are two things that affect the thermal performance. The thermal conductivity, which is how fast and at what power the material looses energy.
Then there is the thermal capacity, or how much energy the material stores.
As a general rule you can have one but not the others. There are exceptions, but no-one likes a damp sleeping bag.