PP Shan GT has quite a short reach, I’ve got one in a large and reach is 428mm that’s about 25mm shorter than my medium sized full suss frame.
Don’t find the shorter reach an issue though, stem is 10mm longer on the Shan and seat angle is slacker too so feels roomy enough when seated.
Worth trying out the Sherpa if you can as even though the reach is shorter you might find it feels ok, same for the Solaris too.
The Chromag Rootdown BA has a reach of 473mm for a large frame and 492mm for a xlarge frame.