  We have imaged the entirety of eight (plus one partial) Milky Way-like
satellite systems, a total of 42 (45) satellites, from the Satellites Around
Galactic Analogs (SAGA) II catalog in both H$\alpha$ and HI with the
Canada-France-Hawaii Telescope and the Jansky Very Large Array. In these eight
systems we have identified four cases where a satellite appears to be currently
undergoing ram pressure stripping (RPS) as its HI gas collides with the
circumgalactic medium (CGM) of its host. We also see a clear suppression of gas
fraction ($M_\mathrm{HI}/M_\ast$) with decreasing (projected) satellite--host
separation; to our knowledge, the first time this has been observed in a sample
of Milky Way-like systems. Comparisons to the Auriga, APOSTLE, and TNG50
cosmological zoom-in simulations show consistent global behavior, but they
systematically under-predict gas fractions across all satellites by roughly 0.5
dex. Using a simplistic RPS model we estimate the average peak CGM density that
satellites in these systems have encountered to be $\log
\rho_\mathrm{cgm}/\mathrm{g\,cm^{-3}} \approx -27.3$. Furthermore, we see
tentative evidence that these satellites are following a specific star
formation rate-to-gas fraction relation that is distinct from field galaxies.
Finally, we detect one new gas-rich satellite in the UGC903 system with an
optical size and surface brightness meeting the standard criteria to be
considered an ultra-diffuse galaxy.
