I'd like to know propagation/contamination delays for all of the sky130 standard cells, and also setup/hold times for non-combinational components. Is this info somewhere in the PDK files?

Take a look at the ".lib" file. This manual may be a bit old but should give you a good idea of how to decrypt the lib file: https://usermanual.wiki/Document/LibertyUserGuidesandReferenceManualSuiteVersion201706.163045249/html