Poly sheeting is far more vapor retardent than 1" of XPS (~0.05 perms vs. ~2.0perms), but if it's a bulk-water/high water table condition forcing liquid up through cracks the slab neither is going to save you completely. A hybrid of 1 & 2, with poly next to the concrete followed by 1" of XPS will be about as good as can be done. Minor amounts of water that wicks/seeps up the fastener holes can still easily dry through the XPS without creating mold conditions at the subfloor, and the high vapor retardency of the poly keeps the majority of the ground water where it belongs ( in the ground.).
By putting all of the wood above the XPS (not sleepers on the slab) the wood stays warmer, and is less likely to retain or condense water on it. If you go with sleepers going directly on the slab they should be pressure-treated/ground-contact tolerant, since they'll likely be below the dew point of the interior air much of the year. Cool wood won't be able to dry readily, and will retain moisture.
Separate sheets of poly should be lapped at least 8-12" and sealed with mastic at the edges, and extended up at least 6" on the foundation wall & mastic-sealed for best results. If you can't get at the foundation edges, use expanding foam to seal it best you can. The foam sealant is still semi vapor permeable in thin layers like that, but it's water proof and won't wick any ground moisture or condensation that might form on the foundation wall.