Can you post a picture of the clearance?
I attached 2 photos showing the difference between the newer style Shimano FD (R5801 7000 8000 9100 GRX) that pulls a bit differently, and an older 5700 FD on my road bike (with a wider seat tube too). The new style FD actually seems to poke in a little more than the older FD, but as others have mentioned, if you switched to a GRX FD with a GRX crank, that would bump out the Q-factor 2.5mm, I believe.
The real problem here though is that the rear tire is coming in too close to the seat tube for wide tires with a FD. Notice that on my gravel bike with 700x40c (effectively) tire, the wheel is far enough back to completely clear the FD altogether. I think your best option here if you want wider tires is to switch to 650b, if that will clear the FD altogether. I would hate to see you spend a bunch of $ on a new FD and crank just to have the same problem, although the newer style FD does pull a little easier, and look cleaner (when the top cap doesn't fall off and get lost..).
