I've been looking for a good european bourbon recently. Looks like I'll have to wait a long time for that, though, I'm really picky about american-style whisky - I only like wheat-heavy bourbons (e.g. Maker's Mark), and even then it's exclusively a cocktail spirit for me so I don't really want to pay the craft tax of ultra-small distilleries. That said, Zuidam Korenwijn 5yo is close enough for me - it has 30% corn in its mashbill, the botanicals are extremely subtle, the cask flavors are a lot more similar to american whisky than to scottish or irish whisy, and the 1l bottle has decent value for money.
Never got into rye whisky, unfortunately.
Rye whisky and korn are interesting for historic reasons, though - German immigrants had a large influence on american whisky, and before the 19th century there wasn't really a big difference between rye whisky and rye korn; purposeful cask-aging wasn't really common yet, and before column stills were invented, korn and whisky were distilled using pretty much the same techniques.