https://www.youtube.com/watch?v=zLAu1Cy9_SQ
As usual, Sumoning Salt has a massive video documentation about a games world record achievements. Its a long video, but very well narrated and put together. I personally recommend watching the video at 1.4x playback speed, if not at least 1.25 times. The video opens with Mark Cerny, the head of Playstation, being the first who did a speedrun on the game Spyro.
There are no timestamps at the moment. If they are added to the video, then I will update this post with the timestamps for listing purposes (if I notice them later).
I don’t know how far you compare, as I only know him since I saw the Tetris video (with the great reveal part). He is not the only one that speaks lot slow, there is at least one another YouTuber (in a different context, but still gaming). Initially I suspected they slowdown videos to get longer playtime. But maybe not.