https://www.openstreetmap.org/way/1266168101/history has surface = hardcore

What is this? Equivalent of surface=compacted (as smashed up rubble)? Or maybe it is closed to surface=gravel?

Or maybe it should be tagged as a different entry from standard surface values?

If not and it is a distinct surface - can you document it at OSM Wiki?

See https://overpass-turbo.eu/s/1CM3 to detect more unusual surface values (move to your preferred map location and press run button)