There is no RCC in MUC. Only lounges available in Terminal 2 are the LH Senator Lounge and Business lounge. Since you are *G, the LH lounge matrons will direct you to the Senator Lounge (left side). There is a LH lounge on each of the departure levels (H gates for the non-schengen flights, and G gates for the schengen flights on the lower level). The senator lounges are pretty nice, but can get pretty crowded during peak times. Food selections are much better than RCC, and the beer and wine are self serve. Enjoy your layover at MUC, as it's my favorite airport in Europe for connecting.

Make sure you bring your 1K card, as the LH matrons won't let you in without verifying the *G card.