aarg:
Inductive or high current loads shouldn't be using grounds on the Arduino board at all. They should be connected directly to the power supply, with a star ground topology to return only signal grounds to the Arduino board.
Do you mean like this Relay inductive load,
https://store.arduino.cc/usa/arduino-4-relays-shield
This is a new version, the old version had a much larger relay.
The point is that large loads or inductive load Gnd should not be put just anywhere. They should be placed as close to the power source as possible. This may mean using a separate power connector to the power supply or a separate power supply entirely. But when using a separate power supply, you may need to connect the Gnd together. And they should be connected on one of the two Gnd pins next to the VIN pin.