There is little if any difference in tracking requirements. 16 kHz at 33.3 RPM is exactly the same be it in mono or stereo. The best styluses are long contact area fine line like the microridge styluses, the Replicant 100 and the Gyger S. They have the best high frequency tracing and are also much quieter. The very expensive Mono cartridges use the same stylus as the stereo versions.
For 78 RPM records it is a much different story. The groove is much wide and Shellac is softer and more fragile than PVC. Large conical styluses are the rule and companies like Ortofon make a 78 specific cartridge.