While it appears only on cards that already have other card types, kindred is a card type and will be counted by effects that refer to the number of card types among cards in a zone.

Tarmogoyf Nest's activated ability creates a token that's a copy of the card Tarmogoyf in the Oracle card reference. Official text for Tarmogoyf can be found using the Gatherer card database at Gatherer.Wizards.com.

Kindred is a card type that allows noncreature cards to have creature types. For example, Echoes of Eternity is an Eldrazi (although not a creature) while on the battlefield and an Eldrazi card (although not a creature card) in zones other than the battlefield.