Which operators have 5G SA deployed and operating (except Rakuten)?
Any US operator have it (AT&T or Verizon oŕ T-mobile for example)?
T-Mobile have in US.
But with SCS 15khz in 600 Mhz band the latency is not near to the mmWave high SCS latency.
Where is it lower?
TMO deployed SA in 600 Mhz and mmWave is still in NSA.
They deployed SA to showcase the wider coverage 5G icon hype to even rural areas.