Hello there.

" Can all Crabapples pollinate Jonagold? "

I usually don't step in on apples but in my case am very familiar with the crabapples from interior Alaska from groups there. The answer is YES. Planners have long used the Russian native crabs as ornamentals. Producers have found the Russian hardy crabs flower extensively, usually before the main fruiting apples. So an extra extended crab tree with extra flowering was found to work very well, was selected as the 'wein' crab. 

Much of what you find in decorative crabs (ie. Mt. Vernon trials) result with some form of hybridization with these northern crabs. All of the hybrids listed in Mt. Vernon's EB 1809 would work too, but problems can arise if the timing is too early or late. Watch flower timing but flower color is no concern. It comes from yet another cross compatible species of crab which are easily crossed.

There are issues with some other aspects of your problem of " triploid ".

It comes down to getting advice from somebody that can list crab varieties for you which are (a) known diploids, and (b) the already fully explained issue concerning data on flower timing.

PS. I have 'sargent tina' from Medina nursery in Bellevue WA. Very horizontal and it pushes red flower buds in the spring and red fruit loved by birds even today. The flowers open white. The species is sargents crab. Ploidy unknown.