Words that start with 'x' and contain 'yph'

Which word on this page has the highest character count?
The longest word on this list is 'xyloglyphy', which consists of 10 letters

What's the max number of words one can make using words that start with 'x' and include 'yph'?
From this list of words that start with 'x' and contain 'yph', we have discovered 2 entries that are possible.

In Scrabble, what is the most points possible from this list of words starting with 'x' that contain 'yph'?
The only choice is 'xyphoid' which scores 23 points.