Commerce Secretary Wilbur Ross's damning connections to Russia are fairly conventional-seeming, in that they're all tied up in Russian-controlled Cypriot banks with difficult-to-establish (but almost certainly existing) connections to Russian intelligence services.

Though he's been silent about nearly everything recently, it's important to remember that Rex Tillerson's extremely close personal ties to Russia are supplemented by financial ties he forged in his (very recent) past career.