Is Mifare NFC?

Yes, sort of.

MIFARE is the name given to a family of NFC chips made by NXP. It includes, for example, the Ultralight family and also the MIFARE Classic.

The industry body which looks after the specifications of NFC is called the NFC Forum. They have set out a range of specifications which cover the different chip, encoding and communication standards,

The MIFARE Ultralight chip is part of the NFC Forum standards. The MIFARE Classic isn't.

While both these chips will scan with most mobile phones, we would say that the MIFARE Classic isn't really an 'NFC' chip although it communicates and works in much the same way.

So, generally, we'd say that MIFARE isn't NFC as it's not completely NFC by this definition. But it's all a little vague and it does depend how much importance you place on the NFC Forum standards.
Seritag - 19 Jan 2023