The wallet Satoshi Nakamoto created was Bitcoin QT. After several updates or upgrades, bitcoin developers renamed it to Bitcoin Core. The version 0.9. 0 of Bitcoin QT was named Bitcoin Core, and it has been Bitcoin Core after since then till now.
You have published wrong information. The first Bitcoin Blockchain implementation I called, Bitcoin Core. Bitcoin Qt was was the Clone of Bitcoin Core that I designed and they have branded the Clone Bitcoin Qt as Bitcoin Core.