The smaller the spread between interest rate and APR, the less fees there are.
But if you choose a lower rate and want to pay points for that rate, then the APR will certainly be higher.
Biggest comparison is:
-interest rate
-lender fees (underwriting, processing, commitment..... different lenders word this in various ways)
-discount points being charged to get a certain rate (if any)
And then just look at the total cash to close. Some things are super negligible, such as how many months of escrow reserves they are collecting. That kind of stuff comes out in the wash and aren’t really “competitive” items.