The most common and most likely answer to this crossword clue is the 7 letter word ESTHETE
E
S
T
H
E
T
E
Buddy explains!
The straight part
We know that "Arty Yank" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case arty yank = esthete.The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.
What does ESTHETE mean?
ESTHETE noun- Someone who cultivates an unusually high sensitivity to beauty, as in art or nature.