I use the free version Fantastical on my iPhone (okay with stock iOS Contacts) and I recall trying it on my Mac (less thrilled and deleted) and Cardhop (ditto) some years ago.
But whatever Apple has done to Contacts in Mac 26 (so much wasted space and flickering), along with your posting above had me remember and revisit Cardhop again. Even free version so much better than stock mess. I'm gonna stick with it for now - maybe, eventually, Apple will restore app to stable functionality.
Or not.
"We agonized over every last detail whilst designing the Contact app. We envisioned vast, unused spaces, and a level of overlap that not only creates a bit of chaos, but also makes an underutilized space feel somehow cramped even though text seemingly disappears right before your very eyes, and I think we really achieved that here."