The list on the left side of the Frame Debugger window shows the sequence of drawcalls (link). Draw-calls issued through a Renderer, which is attached to a GameObject, displays the game object name next to the drawcall item. In the image below, that is "Draw Mesh Cube (GameObject)" where the gameobject name is "Cube (GameObject)". However, when issuing a Graphics.DrawMesh call, it only displays "Draw Mesh". I suggest you put the mesh name, that is passed to DrawMesh(), next to it.