I will have to argue in favor of Y being a vowel. Of course it is.

I do a mix of words with a lot of vowels such as aisle, audio (suggested by someone here) or adieu, or a combination of popular vowels and consonants (earth, throe, frump) and only occasionally a word like quota or quart.

Wordle 300 6/6

The bottom three rows of my diagram today are testing one letter to get the right word.