Any recent iPad or iPhone has much better silicon , even if it’s not an M1.
The difference in speed with your phone might be down to RAM? 6GB vs 4GB? I forget if the latest mini is LPDDR4 or 5 but it might be 5
Otherwise the A16 and the A15 aren’t that different, though the A16 does have a newer ANE ( https://en.wikipedia.org/wiki/Apple_A16?wprov=sfti1 ).
Any recent iPad or iPhone has much better silicon , even if it’s not an M1.