High impedance Speakers

I've read here and there about the benefits of using speakers with high impedances, especially with low power tube amps, but there don't seem to be a lot of them out there. I've identified a few:

Coincident Victory, SuperEclipse, TotalEclipse: all 14 ohms
Coincident TotalVictory: 10 ohms
Omega TS33: switchable 4 ohms/16 ohms
Zu Cable Druids: 12 ohms

Can anyone add to this list?