What node type for enemies in a 2d platformer, and why?

Its kinda a duplicate from this post "https://www.reddit.com/r/godot/comments/18rfd65/what\_node\_type\_for\_enemies\_in\_a\_2d\_platformer\_and/" but I have only seen rigid bodies or 2d nodes but this post is saying CharacterBody2D is the way to go. Is there a right and wrong node to use and why?