I like the Singaporean model of benchmarking high-ranking government salaries to a percent of the pay of top earners in the country (https://www.dollarsandsense.sg/heres-much-singapores-preside..., https://www.psd.gov.sg/docs/default-source/default-document-...), and pairing that with very active anticorruption enforcement.

MPs get paid over $1M USD under this model, but it incentives are much more aligned under this model.