Hi ineptitude,
While it’s not my area of expertise … some of the information in post #3 here and the additional articles, posts, and topics it links to should be helpful.
If you tend to sleep hot I would avoid polyester or “down alternative” comforters which can trap moisture and heat and tend to sleep warmer than more natural fibers such as down or wool or silk.
For hot sleepers I would suggest either wool or silk with a lighter fill and less loft.
Phoenix