Per https://github.com/bitcoin-dot-org/bitcoin.org/pull/968 still shows as bitcoin qt in spotlight.
I located #6116 which appears to have fixed it everywhere else, but it looks like this was missed.
I believe it's https://github.com/bitcoin/bitcoin/blob/master/share/qt/Info.plist.in that's causing it, but I'm not a mac programmer and don't feel safe opening an untested PR.
<key>CFBundleName</key>
<string>Bitcoin-Qt</string>`