Welcome to the site and congrats on the NV. Did you use the search function of this site? It works pretty well and there are several rack topics posted.
Quick answer - that rack appears to be an Aluminess and they can build what you want. They are not cheap. Ladder is not Aluminess, appears to be a generic ladder you can get anywhere that sells van accessories other than they coated it black (most are chrome).
If you want a full basket rack Aluminess is among the best and they directly bolt on. Others like a Smittybilt would need some mods on your end to bolt up. There are bar racks, contractor racks, etc. Aluminess makes ladders that bolt right up to their racks vs. the door. Also not cheap.
Yes, racks can have a lot of wind noise and it can also reduce MPG. It's just a fact of aerodynamics. There are things you can do to reduce noise like fairings or wraps. Again, that is all posted here.
2015 NVP SL - Silver, 20% tint, Bully Dog GT, AEM filter w/ snorkel mod, Topper Rack, Luverne Grip Step running boards, Hankook AT-M tires. DRL delete, LED's
2015 XLR Hyperlite 27HFS Toy Hauler
Blue Ox Sway Pro with Tekonsha P3 controller
Me, wife, 3 kids and 2 big dogs!