alt Hacker NewsIncorrect.
Leaked prior to announcement - Leaked Benchmarks Confirm M2 Chip is Up to 20% Faster Than M1 https://www.macrumors.com/2022/06/15/m2-geekbench-benchmark/
I don't feel like doing it for your other sources. They follow the same pattern. You can check official announcement dates vs "leaked" dates yourself.
[0]https://www.apple.com/newsroom/2022/06/apple-unveils-m2-with...
That was a mistake and I updated it - only the M2 Max benchmarks leaked prior to announcement, not the M2.
Those M2 Max Geekbench benchmarks appeared on November 30, 2022. Apple announced the Apple M2 Max chip on January 17, 2023.
Similarly, those M4 Geekbench benchmarks for Mac were leaked on October 6, 2024, prior to Apple announcing the product. Apple announced the M4 Macs on October 28, 2024.