I’m in my 50’s and just started riding again, after a 20+ year hiatus. Ive ridden extensively this year though, about 3,000 miles split between 3 bikes. Anyhow, I bought a 2019 Specialized Roubaix in April, and it is equipped with a future shock, which works great. I’m not sure what trouble one would expect from it, worst case you could replace the spring if it suited you.
I don’t have enough experience to offer advice on any of the other bikes you mentioned, but I wish you good luck!