Researchers have made a breakthrough in the analysis of donor spin systems, specifically the \ce{Si{:}P} system, which can be utilized as qudits due to their native Hilbert space exceeding qubit dimensions. By employing leakage-aware randomized benchmarking of native ququart and encoded two-qubit Clifford groups, the study assesses the fidelity of these systems. The implementation of adiabatic ramps for electron dipole spin resonance (EDSR) operations enables a deeper understanding of the system's capabilities. The findings of this study have significant implications for the development of quantum computing, as donor spin systems can potentially be used as multi-qubit systems, enhancing computational power1. The ability to accurately benchmark and operate these systems is crucial for advancing quantum technology, making this research a crucial step forward in the field of quantum computing, and its applications will be closely watched by practitioners and researchers in the industry.