Not saying I am the foremost expert on this, but this was my understanding. I know more about older systems. I made some notes based on where I made changes.
Xbox Series X
PS5
Xbox Series S
Xbox One X
PS4 Pro
PS4
Xbox One
Switch
WiiU
PS3
Xbox 360
PS Vita
Wii
3DS (leaving this here, but not sure this place is right. It's somewhere near the Gen 6 systems)
Xbox
Gamecube
PS2
Dreamcast
PSP (Leaving here, but not sure how it compares to Dreamcast.)
DS (Leaving here. Not sure if above or below N64.)
N64
Saturn
PS1 (specs are weaker than N64, except CD format allows for FMVs and other tricks based on greatly superior file sizes)
Gameboy Advance (GBA is actually a 32-bit system with similar specs)
SNES
Genesis (Genesis had a better processor than SNES, but SNES was better in every other way)
PC-Engine/TG-16 (added this into the list)
Game Gear
Master System
NES
Gameboy Color (putting here, but placement is subjective. It's a wasted power upgrade since it mostly just ran crappy looking Gameboy games in color)
Gameboy
curl-6 bet me that PS5 + X|S sales would reach 56m before year end 2023 and he was right.
My Bet With curl-6
My Threads:
Master Thread, Game of the Year/Decade
Switch Will Be #1 All Time
Zelda Will Outsell Mario (Achieved)
How Much Will MH Rise sell?
My Bet With Metallox