Why uninsured pricing can differ
Without mortgage default insurance covering lender loss, the lender prices more of the property and borrower risk directly. Loan-to-value, amortization, transaction type, occupancy, property use, and lender funding strategy can all affect the rate bucket.
Some mortgages with 20% or more equity may still be lender-insured or insurable behind the scenes. Ask which pricing category applies rather than assuming every conventional mortgage is identical.