Different design in relay load connections

(I know, relay are drawn in the wrong way, NO contacts should be in serie with load, I'll fix it ASAP)

When I have to build a board to switch many devices (mains powered), I always use a single "common rail" for all loads, like the one in this image:

But in the past few days I had to fix two fridge (two different brands) and I noticed that loads connected to the control board relays used a rather different schematic:

I wonder why they've used this type of connections. I add FWIW that there were no particularly heavy loads, and wires, relay and PCB traces were all correctly sized for the power needed, and moreover there were no analogies between "grouped" devices.

(I know, relay are drawn in the wrong way, NO contacts should be in serie with load, I'll fix it ASAP)