Following up: Yes, that turns out to be the correct part for the MK2 player-side docking connector, the QR/P6 Series. The parts I received fit perfectly.

The blade terminals that are linked to it come in four flavors: Large terminals for the two large power pins, and smaller terminals for the remaining smaller docking pins. Each of those comes in two flavors for two different gauges of wire to crimp.
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Tony Fabris