It's been awhile since I dropped in and I'm surprised to see all the additional replies since my last post. I want to thank everyone who took the time to post replies with suggestions; I found them to be very helpful and informative.
I've been doing my research for a long time now and will be test riding the Specialized Turbo Creo Evo and most likely purchasing the same day. Besides the three bikes in my original post I looked at every class 3 road and gravel ebike available in the U.S. and keep going back to the Turbo Creo.
I love the looks of the Orbea Gain; due to having a hub motor you really can't tell its an eBike. It is also the least expensive of the ones I'm looking at. After many hours of reading and watching youtube reviews, I now know the hub drive is not for me.
As for the Trek Domane HP+ 7 it has the most power with the Bosch motor putting out 85nm. It would be great for the mountains I'll be climbing where I'm going to want the greatest assist but on the flats I want a lighter bike so I can easily ride without using the assist if I choose. My rides will be long so battery range is very important. Being the most powerful of the three bikes it is also the heaviest which may cause me to rely too much on peddle assist. The other factor is the price. It is by far the most expensive of the three.
Lately I have been looking at the new Canyon Grail On class 3. It too has the same set up as the Trek and weighs around 36 lbs. The price is also reasonable compared to the Trek and Specialized. Problem is the only way to purchase it in the U.S. is to buy direct online. Not one dealer in my area carries it and only a few are designated as service reps. I would have to order online and shipping timeline may be an issue. I may still go that way if the my test ride of the Creo doesn't go well.
The Specialized Turbo Creo checks all my needs. Specialized has good customer support, are located near where I live and I know someone who works for them. Unfortunately that won't get me a discount. The medium size Creo will weigh about 29 lbs., its motor is mid drive, it doesn't look like an eBike, it has good battery range. Every review has been mostly very positive. They claim the transition from assist to no assist is smooth. For me the only negative is the price and maybe the 35nm of torq...I will know more once I test ride it. I'm in pretty good shape and a decent climber but not as strong as the guys I'll be riding with. I think the Creo will be just the ticket for me to stay with them and not be the one to slow them down. Thanks again.