On September 2, Kanye West submitted 57,892 signatures to be on the Arizona ballot as an independent presidential candidate. The requirement is 37,769. The deadline is September 4, so for this petition, he did not wait until the last day to file. See this story.
The story says the requirement is 39,039. That is an error. The requirement is 3% of the number of registered voters as of March 1, 2020. The author of the story seems to think it is 3% of the current number.