Are there actual transistor schematics of the sky130_fd_sc_hd library cells? The data sheets have logical diagrams but not really schematics. E.g. https://antmicro-skywater-pdk-docs.readthedocs.io/en/test-submodules-in-rtd/contents/libraries/sky130_fd_sc_hd/cells/a221oi/README.html#schematic

No. We got only netlists from SkyWater. No useful documentation, either.