What's the difference between a Garmin Drive, DriveSmart, and dezl?

Per Garmin community discussion and retailer product pages cited in the signals, the Drive line is the budget tier with basic navigation, DriveSmart adds Bluetooth hands-free calling, voice assist, smart notifications, and live traffic, and the dezl OTR series adds custom truck routing based on vehicle height, weight, and load type, plus truck-specific POIs like loading docks and truck-friendly parking.