Bjorn has been driving a Jag i-pace in N. Europe and took advantage of a 350 kW DC fast charger in Germany from Ionity to collect data on charging rates. In his video he charts charging kW by SoC, and then shows this interesting graph that also takes into account the car's efficiency. The four cars plotted were all driven at 90 kph so the data is less interesting for the value obtained but rather the relative values.
Jaguar has said that they intend to improve DC charging rates in the future, but for now they are trailing the pack. Tesla remains way ahead even in the Model X tested; the Model 3 LR is a good 1/3 faster due to the lower consumption on the road.