The most common and most likely answer to this crossword clue is the 2 plus 5 plus 3 plus 5 letter word IT TAKES ALL SORTS
I've seen this crossword clue in Financial Times
I
T
T
A
K
E
S
A
L
L
S
O
R
T
S
More clues leading to the result IT TAKES ALL SORTS
Buddy explains!
The straight part
We know that "not that everyone would agree" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case not that everyone would agree = it takes all sorts.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.