They are all univariate models: some are trained offline on a bunch of different series before being applied (deep learning, “global” models), others are applie

They are all univariate models: some are trained offline on a bunch of different series before being applied (deep learning, “global” models), others are applied directly to each series to forecast (“statistical”, “local” models), but the task is the same univariate time series prediction for every model there.