Are you using "custom" and "semi-custom" to refer to the cabinets or the finish? Custom cabinets are specifically made to measure to exactly fit your space. Semi-custom are bought pre-made and fillers are used to make the pieces fit the space. A custom finish should use hand-applied stain with attention to evening out the variations in wood tone, and covered with sprayed pre-catalyzed lacquer. I dunno about "semi custom" - maybe everything is just sprayed, without the care regarding wood tone variations.

I see a lot of gray in both cloud white and white dove - less in cloud white but it is still there a bit. The Velvet white has no gray in it and is more of a warm white, but no highlighter yellow and lighter than linen white by a few shades. It is still quite a bit darker/creamier than both cloud white and white dove. I did read, in my search for the perfect cabinet color, a decorator (in the House Beautiful 500 best paint colors thing) say that when linen white looks too yellow, he sometimes mixes it with decorator's white. That was too complicated for me and my quick decision but if you have some time, you could buy a sample of each and play with the proportions a bit. . . Oh and trying to find that quote (I didn't find it) - I found this and a picture. . . It's true the whites I use are not all the same shade, not even in one room. I use Benjamin Moore Linen White quite a bit, but I use it in various densities. I mix it with pure white to take the edge off the commercial color, which is always slightly too blue. I do the baseboard and trim in the brightest white because it sparks up the room and really plays up the architecture. The living room walls here are two parts pure white to one part linen white, while the trim is five pure whites to one linen. Linen White ages so well, you don't get tired of it. In my own little house in the country I painted the walls in it 20 years ago and I still like it. Here is a link that might be useful:

$1750 is a hack. Not a Pro. It’s not even half of what a good job should cost. 7-9K is average, from someone that knows what they are doing spraying a conversion varnish. Lacquer is a 10 minute finish for cabinets because it does not hold up to moisture. House paint belongs on houses, not cabinets. It won’t be durable enough. Read about the KCMA testing that all cabinet manufacturers undergo for a factory finish. That is the kind of durability that you are giving up. For chips, runs, and drips, and bugs and dust. https://www.kcma.org/certifications/ansi-kcma-certification DEMAND a finished door sample to do your own testing. You will end up in the same boat as these people. The tide has turned on white cabinets. Wood cabinets are coming back strong. And those are ahead of the game. When white cabinets are the new avocado green, you’ll wish you had your old wood ones back.

I’m interested in this as well. I’m DIY’ing our kitchen cabinets and the SW rep sold me on the Pro Industrial waterbased alkyd urethane. I’m now having second thoughts :( My bro-in-law sprayed lacquer ~5 years ago on his cabinets and they still look great. He had access to a an offsite shop to spray and I have heard not to spray lacquer at home?