Here are the 20 most highly cited philosophers with Google Scholar pages who either (1) work across multiple fields, so did not have a majority of their citations to work in any of the prior areas covered (metaphysics & epistemology, moral & political philosophy, philosophy of mind & cognitive science, philosophy of language, free will & moral responsibility, decision theory et al.); or (2) work mainly in areas not previously covered (see prior parenthetical). I focus only on philosophers for whom the majority of their citations are to philosophical work or work in philosophy journals. One tricky case is Barry Smith (University at Buffalo), with 55,900 citations, but a majority are to work in biomedical journals, although some of that work is related to his more clearly philosophical work in ontology.

(UPDATE: email me about omissions)

1. Anthony Appiah (NYU): 48,000*
2. Paul Thagard (Waterloo [emeritus]): 41,600
3. Linda Alcoff (Hunter/CUNY): 28,100
4. Michael Bratman (Stanford): 25,100
5. Miranda Fricker (NYU): 21,400
6. Joshua Knobe (Yale); 21,300
7. Cristina Bicchieri (Penn): 21,000
8. Shaun Nichols (Cornell): 20,600
9. J. Baird Callicot (North Texas): 19,800
10. Edouard Machery (Pittsburgh): 14,900
11. Chandra Sripada (Michigan): 13,900
12. Gregory Currie (York [emeritus]): 13,700
13. Neil Levy (Macquarie): 13,600
14. Colin Allen (UC Santa Barbara): 13,300
15. Margaret Gilbert (UC Irvine): 12,800
16. Brian Leiter (Chicago): 12,100
17. Sally Haslanger (MIT): 11,800
18. Cheryl Misak (Toronto): 11,000
19. Alexander Nehamas (Princeton [emeritus]): 10,900
20. Jerrold Levinson (Maryland [emeritus]): 10,500

*A number of highly cited works that appear on Appiah’s Google Scholar page are actually by other authors (esp. Charles Taylor)–I’ve subtracted those from the total listed here.