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.

Players can easily change skins in both Java and Bedrock in Minecraft 1.19. Skins are designs that players can use to personalize their in-game characters.

Minecraft Steve has been added to Super Smash Bros Ultimate, and there's now a mod that lets you make use of your Java skins.