We have both a Verizon and Sprint hotspot. Both are unlimited. The Verizon is not throttled and runs $50.07 per month. This was originally a FMCA member plan (MiFi 8800L was 1 cent and you own it), but we are grandfathered into the plan by Verizon, which is not available from FMCA at this time.
The Sprint plan is $49.99/month for 10k GB (yes 10,000 G

and no throttle. (Just as a test, we were able to reset the hot spots to 100,000 GB and actually used 30,000GB by streaming HDTV movies to a television, tablet and two phones for 3 weeks at the same time. I wanted to see how far we could push the hotspot which can handle up to 15 devices). This is available to FMCA members with a one time $49.99 rental for the hotspot (must return if you cancel the plan). The plan is not contract and you can suspend service in off season at $13.99/month. I've spoken with FMCA and it appears this plan will continue as is when the T-Mobile/Sprint merger is complete and running as one system by June, 2022. Also it is expected plan members will be receiving a T-Mobile 5g hotspot prior to the final merger. FMCA tech support has said they expect no changes in pricing.

We haven't been using the Sprint hotspot this month but this screen shows available data "limit" of 100,000 GB.
We use both hotspots when traveling and go with the one with the best signal/highest speed. On our last trip out west this summer Verizon coverage was pretty good, but the Sprint hotspot provided faster 4g service about 40% of the time and was the only service in several remote areas. Also my wife is a university professor and I would commit one hot spot to her for work and run the other for TV, SiriusXM app, wifi calling, etc.
We have ATT service (do not use data due to we are in my brother's business plan (he pays for our service) and don't want to eat into his companies data limits) Also our 2020 F-250 has an ATT hotspot, but the cost for data and limits are not at all appealing considering we have access to 2 hotspots with unlimited data. If we want to use something like Android Auto, we just use our phone which are tied into one of the hot spots.
If anyone is interested in FMCA, drop me a PM and I'll be happy to answer questions or point you in the right direction.