For multi-user MIMO, the precoding is not codebook-based; therefore, the codebook choice has no impact on the simulation. For the 5G codebook and single-user MIMO, you can find all possible antenna configurations listed in the generic scenario.
The layer mapping table defines the rules mapping the codewords onto the layers. Since in your simulations, you are considering UEs with only one layer (max. number of layers <= number of antennas), layer mapping has no impact in your scenario.