Is it possible to have multiple separate paths in EdgeCollider2D that aren't connected without making extra GameObjects, similiar to PolygonCollider2D?
I can't add multiple components of same type to the GameObject with AddComponent - "Already contains a component".
You certainly can add as many Circle, Edge, Box, Polygon and Capsule colliders as you like to a GameObject. Only CompositeCollider2D restricts to a single one.