What are the favorite project types of each of the top 10 donors?
favorite project type refers to project_resource_type; top donors refers to max(donation_total)
SELECT project_resource_type FROM ( SELECT T1.donor_acctid, T3.project_resource_type FROM donations AS T1 INNER JOIN projects AS T2 ON T1.projectid = T2.projectid INNER JOIN resources AS T3 ON T2.projectid = T3.projectid ORDER BY T1.donation_total DESC LIMIT 10 ) GROUP BY project_resource_type ORDER BY COUNT(project_resource_type) DESC LIMIT 1