I highly recommend checking the GameHut channel (https://youtube.com/c/GameHut).

It's the channel of the Jon Burton, the director of the Traveller's Tales, he worked on games like Sonic 3D Blast or Crash Bandicoot: The Wrath of Cortex. It's full of interesting stories with technical details about how things were achieved on old hardware or why were they done in some funky ways.