J1772 includes a lot of possibilities, but I believe the most common public charger is 30A, 208V - about 6 kW. The fastest J1772 is 80A at 240V, 19.2 kW, but only upgraded Tesla cars can take advantage of that rate in the U.S. (J1772 is a fancy extension cord that passes AC power to the car and the car's built in charger converts to DC.)
CHAdeMO is capable of up to 50kW, in the real world it is often 40-45 kW unless you happen to be at one of the 24kW stations from BMW or Nissan. CHAdeMO has a big converter box in the charge station and feeds the car directly with high voltage DC, bypassing the car's built in charger.