Looking on the internet deeply has found these results:

what kind of is the most popular phrase on the web.

which kind of 1282,000 results on the web	what kind of 1201,000,000 results on the web More popular!
Some examples and use cases from the internet:	Some examples and use cases from the internet:
Jun 11, 2015 ... ... twitter handle @inoffensive and whether you're looking at this on your laptop or your phone, you're sure to spot which kind of person you are. Jul 17, 2008 ... You can say "Which kind of ice cream would you like?" or "What kind of ice cream ..." No real difference. But a classic song is titled "What Kind of ... Dec 6, 2012 ... (assumes two or more different types of birds); Which kind of bird is facing extinction? (assumes the three birds in the question, not the entire ... Which Kind of Collaboration Is Right for You? Gary P. Pisano · Roberto Verganti. From the December 2008 Issue. SUMMARY FULL TEXT; SAVE; SHARE	It doesn't look like this phrase is very popular! The search could not find any examples on the internet.

which kind of

1282,000 results on the web

what kind of

1201,000,000 results on the web

More popular!

Jun 11, 2015 ... ... twitter handle @inoffensive and whether you're looking at this on your laptop or your phone, you're sure to spot which kind of person you are.
Jul 17, 2008 ... You can say "Which kind of ice cream would you like?" or "What kind of ice cream ..." No real difference. But a classic song is titled "What Kind of ...
Dec 6, 2012 ... (assumes two or more different types of birds); Which kind of bird is facing extinction? (assumes the three birds in the question, not the entire ...
Which Kind of Collaboration Is Right for You? Gary P. Pisano · Roberto Verganti. From the December 2008 Issue. SUMMARY FULL TEXT; SAVE; SHARE

It doesn't look like this phrase is very popular! The search could not find any examples on the internet.