Unfortunately, for Minecraft Java Edition, there are no skins that will automatically incorporate a cape. However, in Bedrock Edition, there are some skin packs that come with capes included.

Minecraft Bedrock is a popular option thanks to it supporting cross-play via many different consoles and devices, so you can ...

Mojang Studios has released Minecraft: Java Edition Snapshot 22w43a to players with several major changes to camels, the Creative inventory, and Player Reporting, alongside the usual bug fixes.