I've used chrome plated brass valve stem caps on all of my vehicles for years and have never had a problem. I typically use the German style and have been known to use a dab of silicone on the threads of my DD's wheels.
The aviation style valve caps MS20813-1 are what you seek. Brass, corrosion proof and don't stick. Plus they will absolutely hold back 3000PSI and are rated to 5000PSI.
Just in case you haven't experienced the joy of removing a metal valve stem cap that has fused itself to the stem through galvanic corrosion, here's your reminder that you need to replace them with plastic ones. The RAV4 I bought last fall had them on three wheels and all three needed vice grips to remove.
I never forget buying aluminum caps with the corvette logo on them.......they fused so tight I had to have a tire shop replace all 4 valve stems. Never again.
The aviation style valve caps MS20813-1 are what you seek. Brass, corrosion proof and don't stick. Plus they will absolutely hold back 3000PSI and are rated to 5000PSI.