This is already explained in the thread. Tracfone was omitted because it (apparently) doesn't permit tethering and OP only included providers that explicitly permit tethering.
Interesting. They do not offer at least one postpaid benefit, at least not for free: it's $6/month for unlimited talk/text to Mexico/Canada, which as I recall is included in Simple Choice plans. Not...
Great improvement in that case, maybe they are already using Mobilicity spectrum...
Did you leave out TracFone for a reason?