how to recognize name of person with entities in luis
Please use the personName prebuilt entity. For more information, see: https://docs.microsoft.com/en-us/azure/cognitive-services/luis/luis-reference-prebuilt-person.
although i would've preferred to be able to use patterns for this, I ended up using the built-in Entertainment.Person entity (which also doesn't recognize all names, hence why a pattern could've worked).
If the request here is to provide clear documentation on how to achieve this, I totally support. There are tons of use-cases where you want to extract key pieces of information out of an utterance and little guidance on how best to achieve that, at least in the case where there isn't a finite vocabulary for that piece of information.