Nintendo did not create Skylanders. The franchise was developed by Toys for Bob and published by Activision (now part of Microsoft).
Skylanders (2011) popularized the genre, but it built on existing ideas:
Before Skylanders, the studio revived two classic Activision properties:
They pitched "Spyro's Kingdom" with physical figures. Activision expanded it into a new IP: Skylanders: Spyro's Adventure.
Nintendo launched amiibo in 2014 (with Super Smash Bros. for Wii U)—three years after Skylanders. Amiibo use NFC (tap-to-read) vs. Skylanders' portal (USB/Bluetooth base).