Some strange Sonic CD sprites Mega Drive Developers Collective

I've wondered about this for months at this point and never came to a clear conclusion about these sprites. I'm specifically talking about the angled

Genesis / 32X / SCD - Sonic the Hedgehog CD (Sega CD) - Wacky

Sonic Mania The Chaos Project: Sonic the Hedgehog

Sonic the Hedgehog CD/Hidden content - Sonic Retro

Sonic CD Sprite Sheets – Sega Genesis - Sonic Galaxy.net

Sonic CD - Wacky Workbench - Present by SonicDash57 on DeviantArt

Sonic Generations [Beta - PS3/Xbox 360] - Unseen64

Genesis / 32X / SCD - Sonic the Hedgehog CD (Sega CD) - Objects

We're arguably going towards the best years for the Sonic

Sonic CD Sprite Sheets – Sega Genesis - Sonic Galaxy.net

Genesis / 32X / SCD - Sonic the Hedgehog CD (Sega CD) - Sonic