If you have a lot of miles behind you, and know pretty well what you want ... test-ride. Every company makes similar bikes ... racier bikes, aero bikes, gravel bikes, "endurance" bikes .... ride a bunch, find out what sort of riding position you like (remember that the more you ride, the more your body will adapt to riding .... and that any frame can become a different frame with a stem of a different length and angle (or simply flipping a stem ... )
I am inclined to suggest an endurance frame, but I don't think yo need much advice, yo need test rides. Once you are a little more firm on what you want, then you can go online, compare geometry charts, and decide which bikes, with which stems/bars, will suit your comfort range and budget.
Mainly ... super for you to be getting back into riding. You have probably added years and have certainly added joy with this decision.