After deciding on the esthetics (with your SO, if applicable), I agree with @ghdprentice in the approach of finding a rack that provides a very stable platform for each component as well as the ability to treat the support of each component individually.
Depending on the component, I use SRA Ohio+ platforms, a BDR shelf, Zoethecus Z-slabs, DIY constrained layer platforms, thick wood platforms, Herbies products, springs, and Hudson HiFi platinum silicone hemisphere footers. In some cases, I decouple a stable shelf like a Z-slab from the rack and then further decouple the component from the shelf using the hemisphere footers, Herbies footers, or springs. My three "racks" consist of either sturdy constructed quartersawn oak furniture (that I have heavily reinforced) or a Sound Anchor stand. If you simply want sturdy, it is hard to beat Sound Anchor. However, having a fully digital system, I know nothing about specific best practices for supporting a turntable.