You used the term "shelf," so do you mean one long piece, or is it more of a rack where you are stacking things?
If it's one long piece, just go left to right
table > phono > linestage > poweramp
This works well since cables come of the right side of the table, and routing to the right means that you're not going across the table's motor/power supply. The setup of the Eros jacks also enables a left to right passing. The general rule is keep signal cables away from power cables and power transformers. The lower the signal level passing through the cable, the more important this is.
If it's a stack, then things get a little trickier, but the same principles apply.