I don't see any mention of it, but you are looking for USB-C Power Delivery.

Quickly looking at the ones on that page only the older 4k 30Hz type devices seem to support PD.

Doesn't look to be an all in one solution unfortunately.

For now, I've somewhat given up looking for a Thunderbolt 3 dock with DP passthrough at 60Hz, power delivery and that's a subset of what you want.

Two cables isn't really that much of a problem is it?
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Christian
#40104192 120Gb (no longer in my E36 M3, won't fit the E46 M3)