Multi-mode continuously variable transmission assembly with drop set arrangement

A multi-mode CVT for a work vehicle powertrain has a continuously variable power source (CVP), an input arrangement with an input shaft receiving engine power, a variator arrangement with a variator shaft supporting a planetary set, a drop set arrangement with a drop set shaft, and an output arrangement with an output shaft supporting an output component. The input, variator, and drop set arrangements include clutch components with the clutch(es) of the drop set arrangement transmitting CVP power or combined CVP and engine power to the output arrangement to provide a selective gear reduction for transmission of an output power according to a plurality of transmission modes, including a CVP-only mode and a combined engine and CVP split-path mode.