I have made a few with Stirling for bittering, Saaz late.
From my old memory bank.
American Hop. - Noble parent. (HMf=Hallertau Mittelfrüh)
Stirling - Saaz
Santium - Tettnang
Mit. Hood - HMf
Liberty -HMf
Vangaurd-HMf
Ultra-HMf
US Tettnang = Fuggles. DNA testing
I like that list. I know that hops like Amarillo, Citra, Mosaic, etc. are all the rage but I almost always have [what I call] clean, American hops on hand. Liberty, Crystal, Mt. Hood, Ultra, Santiam, Sterling, Vanguard, Glacier and even US Goldings. I generally don't use them to sub for Noble hops in lagers but they could certainly be used that way. I typically use them in pale ales, ambers, reds, blondes, etc.
Forgot one I have used often, you jogged my memory.
Crystal - HMf
Columbia -HMf
Those turned out a little fruity for the brewers back then.
It always surprises me when Crystal is mentioned in the same vein as Mt. Hood and Libery. To my palette Crystal has a distinct american hop aroma and flavor that distinguishes it from the other 3. Its a lovely hop, its just not interchangeable as a HMF sub like I feel Mt Hood and Libery are
Half sister, to Mt. Hood, Liberty, and Ultra. It has more American character.
https://learn.kegerator.com/crystal-hops/
One thing I've noticed that may or may not be related is that Crystal seems to have a lower AA% than many of the other US-bred hops with noble parentage, at least in my experience. This means you need to use more hops for the same amount of IBU's compared to something like Mt Hood or Ultra. I certainly pick up more american hop character from Crystal, but is it because I'm using more? I know that Sterling tastes a lot like Saaz at my typical lager hopping rates and schedules, but it gets a lemonade character when used at higher rates in an APA. Could it be that a similar character is present in all of the hops in this family, but you just need higher hopping rates to bring it out?