I think that’s hard to predict without trying it out, so I would probably start with whatever arrangement is most convenient/ergonomic, and only worry about noise if you find that it’s actually a problem.
The conventional wisdom is that digital modules tend to produce noise and analog ones tend to be prone to picking it up, to wildly varying degrees, but in my system one of the worst noise producers has been my MFB OSC-02. Also, in my limited experience, Doepfer modules are some of the most prone to picking up noise – I suspect because his fairly high quality power supplies allow him to get by without much filtering/regulation of the voltages coming in from the PSU, which keeps the modules cheap.
In my system, the main power supply is an Intellijel TPS30… Max, I think?.., which doesn’t have nearly as many power connectors as I’d like, so I have one of them running to a Koma STROM busboard, which does at least some extra filtering (or at least it has a bunch of capacitors…). I keep the noise-prone modules plugged directly into the Intellijel supply (the idea being that they have a shorter path to ground), and the noise-producing ones on the busboard. I don’t know how much of a difference it really makes, but it seems to have to reduced the amount of bleed from the OSC-02 and whine from Teletype that my Wasp filter picks up, compared to when I had them all plugged in next to one another.