For this probe, the best order is to route by function and sensitivity, not randomly. In general, routing should prioritize net classes deliberately rather than one-by-one ad hoc; the project-modification guidance explicitly calls out routing by inferred net type and prioritization order . Since your board is a narrow sensor probe with a capacitive front end, I’d use this order:

These are the most sensitive nets and should get the shortest, cleanest paths with the most control over nearby copper. If you route power and digital first, you’ll box yourself in and force these onto noisier paths later.

Once the sensitive analog path is protected, lock in the supply distribution. This keeps decoupling loops compact and avoids awkward detours later.

These are low-speed digital nets, but they are shared bus lines and should still be kept tidy and parallel only where necessary.

This is usually the easiest remaining signal once analog, power, and bus routing are settled.

If you want a concrete hand-routing sequence, do it in this order:

Because placement quality strongly affects trace length and routing success, it’s good practice to keep supporting parts clustered near their ICs and connectors at the edge before routing . For your board, that means:

If you want, I can turn this into a pin-by-pin routing checklist for J1, U1, and U2 so you can clear the 14 airwires in order without guessing.