A couple of those companies don't specialize in student loan refinancing.
SoFi started as a student loan refinancing institution for low-risk professional pools with Stanford and Harvard alumni. As someone who refinanced their student loans recently with SoFi and shopped around, I can tell you I got the best rate from SoFi.
You seem adamantly opposed to SoFi though. Despite the unfounded accusations in your rant, why are you?