Spieker Center of the Anticomplementary Triangle = Incenter.

Spieker Center of the Antipedal Triangle of the Orthocenter = Incenter.

Spieker Center of the Anticomplementary Triangle of the Anticomplementary Triangle = Nagel Point.

Spieker Center of the Circum-Orthic Triangle of the Excentral Triangle = Nagel Point.