So it seems that I can either have my Apple Watch Series 4 on the cellular network (regardless of the iPhone) OR I can get the Apple Watch and iPhone XR synchronized text messages properly, but NOT AWAY.
The text problem was not a problem with my iPhone 6 and Apple Watch 4. Now that I have a new iPhone XR, the clock will display text messages as unread when I see them on my phone. They have been read on my phone so they should show as read on my watch.
I solved the text sync problem by resetting all my settings on my phone (which was a big problem) but now my clock can't make phone calls or send texts when it's too far away from my phone and when it's not within reach of wifi, which is a service I paid for.