During my research I found US Mobile. It offers a plethora of calling plans and all are super inexpensive. You can go on either Verizon or T-Mobile networks. Their unlimited text, unlimited calling, unlimited data plan is $45/month, dropping down in price as you add lines, eventually getting to $25 a month for a family of four.
They don't do data deprioritization on Verizon 5G plans. You are treated the same as if you were a Verizon customer when it comes to data speeds during high volume use.
They don't have a data speed cap.
They stream video at up to 4K resolution.
They have chat, email, and 800# phone support.
I ended up signing up with US Mobile and my free SIM card should arrive in a couple of days. I'm going to put the SIM card in my old, inactive Pixel 2XL phone (I will get a new phone number.) I will do side-by-side comparisons with my Pixel 5a phone on Verizon and my wife's Pixel 2XL, also on Verizon. I have 14 days free trial period. If I like US Mobile I will get my Pixel 5a on their network (keeping my current phone number), drop my Pixel 2XL, and get my wife and two sons signed up on it. Or maybe my sons will go their own separate way on cell phone service.
Right now I'm paying Verizon $174 a month for our four lines and only getting 10 GB of data. If US Mobile works for us we could be getting unlimited data on 5G for only $100 a month.