The older touring bikes from the 60s to the 80s preferred all the touring weight on the rear of the bike, in fact they had no fork connections for panniers just for fenders. The interesting thing is that those bikes ran great that way, the better the bike the less chance of bike shimmy. For example, the regular Schwinn Le Tour shimmied like crazy according to a friend who use to tour many years ago, but my first touring bike was an 85 Schwinn Le Tour Luxe that used the Voyageur frame, never shimmied. But my 2019 Masi Giramondo shimmied like crazy no matter where the load weight was, so Hario/Masi exchanged the frame for a 2024 frame, it too shimmied a bit, but not as bad. I took the bike to a bike shop, and they put a plastic shim into the headset area and now it doesn't shimmy at all no matter where I put the weight.