I saw some reviews of
http://www.netbuddy.co which had some pretty great speeds, about 60 mbps down and 40 mbps up over LTE cellular connection, unlimited LTE, no de-prioritizing, no contract.
You buy a hotspot device and a SIM card from Netbuddy and then you can use the hotspot as a WiFi router or if you get the right device you can have it act as a modem-to-wired-Ethernet to supply a WAN Internet connection to your own router or gateway (which is what I would do).
I think they buy AT&T tablet LTE plans with 22 GB per month and pool the plans together and then they're able to offer "unlimited" LTE Internet to their customers as their back-end manages the plans to their customer SIM cards so you always get LTE speeds.
Yes, sounds a little sketchy.
Last month (May 2019) they were charging $60/mo.
This month (June 2019) they're currently charging $65/mo.
Anyone try this?