We use a Cricket phone (AT&T) with hotspot for $65 a month including TnT and 10 gig of data.
I also use a Freedompop (Sprint) hopspot with a gig of data free a month. I also have a RingPlus phone (Sprint) with a hotspot with a free gig of data a month.
Karma (Sprint) had a unlimited use hotspot throttled to 5 mbps for $50 but recently have dropped speeds to between 2 and 3 mbps.
These are just a start but if you really want more info, go to howardforums.com and they have info on any plan, phone, network, etc.
2011 GulfStream Amerilite 25BH
2003 Ford Expedition with 435w tilting portable/ TS-MPPT-45
750w solar , TS-MPPT-60 on the trailer
675 Ah bank, Trip-lite 1250fc inverter
Sportsman 2200w inverter generator