All the Teslas are longer bumper to bumper than the i-Pace, even the Model 3, but all Teslas have shorter wheelbases and cab lengths.
All the Teslas have less ground clearance (when cars are set to max clearance) and less approach and departure angles as well as lower crest clearance.
The Model S 90D weighs the same as the i-Pace EV400. The Model X 90D weighs 12% more than the i-Pace (530lb).
The Model 3 75-RWD weighs 900lb less than either the Model S 90D or i-Pace 90kWh AWD. However, the interior and boot space is less, and it's RWD only with limited amenities.