Cold hardy cultivars are nearly all compatible, as long as they are the same species. Any arguta male is likely to work well enough with most female argutas. Just be sure you don’t get an Arctic kiwi male, A. kolomikta, unless the female is also A. kolomikta.
Many different Actinidia can cross pollinate, but the small fruited species will often fail to set fruit on the larger fruited species. Some researchers have speculated that the pollen tubes from small fruited species don’t reach the ovaries due to longer styles, but there is some evidence they just “get lost” along the way. I have successfully set fruit on A. chinensis tet females using arguta pollen, but I have also had failures. I suspect it has more to do with genotype and not small fruit.
A. kolomikta females will set fruit with most Actinidia pollen regardless of species or chromosome number, but will usually only produce viable seeds with diploids. A. kolomikta pollen does not usually work on arguta females or other species, even diploids. A. chinensis tets and A. deliciosa males can pollinize arguta females, but only if the bloom periods overlap. Most fuzzy kiwis are too late, but there are a few with long bloom periods that could work.
