I occasionally use a 50kW Chargepoint charger (actually 48kW if you read its label). It's display shows a 42-45kW rate until the car gets to 85%, tapers to 30kW at 91%, 20kW at 96$ and then drops off from there. The last part takes about 20 minutes to get to 100% if left to charge to that level.
My Juicebox Pro 40 charging indicates 7.6-7.7 until 100% charged, then it drops to 0 for a very brief moment. Its behavior after that is inconsistent but usually jumps back up to 3.x-6.x and unsmoothly tapers down from there for some inconsistent period of time, usually about 1 hour.
These results are fairly well documented by now. There are charts, including at https://pbs.twimg.com/media/DoQuXPhW0AAHl9_.jpg
that show how the car regulates charging rate based on SOC, and also compares the similar tapering of other EVs.
On my I-Pace, despite the chart, I can achieve 100 kW charging for a limited period before the car throttles charge rate to 82-84 kW. (I suspect this lowering to 82 kW is related to the ambient temperature and the (in)ability of the I-Pace to keep the battery at optimal temperature.) If the charger's max output is 50 kW, then you can adjust accordingly.