The most common and most likely answer to this crossword clue is the 6 letter word BRAHMA
I've seen this crossword clue in The Times
B
R
A
H
M
A
More clues leading to the result BRAHMA
- Creator undoes harm in soul
- Composer curtailed by a Hindu deity
- Composer not entirely a Creator
- Composer to a very large extent a god to many Indians
- Cosmic creator appeared when Abraham was confused after giving up first-aid
- Husband consumed by God after boy found God
- Bachelor saint abdicates Ashram built for creator
- Hindu god of good cheer, mum
- Composer sacrificing son for a Hindu deity
Buddy explains!

The straight part
We know that "Creator" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case creator = brahma.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.