Hey Brad,
Tough question to answer and no names of top aces come to my mind with the exception of Bob Johnson who originally had 1 ground kill put with his aerial kills so he has 27 not 28. WWI and the Flying tigers are a different story.
Many believe Billy Bishop only scored 1 kill with the other 71 being fables. Many WWI aces had their scores revised by the AF in the 60s when they did their studies on aerial victories. Shared kills originally credited has whole were recaluated and ballons not counted at all. Many including Eddie Rickenbacker had their scores reduced and many became unaces. Also in regard to the Flying Tigers originally many claimed and were credited has aces due to their Camco bonuses and ground kills. George Burgard's son Lee has a neat site talking in detail about AVG medals and aerial victories.
http://members.tripod.com/Flying-tiger-ace/id56.htm
Boyington wasn't the only AVG member who tried to claim the bonuses has kills. You must remember that in many cases the bonus was split between those pilots flying the mission so in fact you could get credits by flying cover and not engaging the enemy.
An example of this is MOH awardee Jim Howard scored only 2.33 aerial victories, Ken Jernstedt with 3 victories the rest for both being ground claims.
Here is a list of victories and camco credits.
Pilot bonus account
CAMCO credits air-to-air kills
Percy Bartelt 7.00 5.00
William Bartling 7.27 5.00
Lewis Bishop 5.20 2.20
Charles Bond 8.77 7.00
Gregory Boyington 3.50 2.00
J. Gilpin Bright 6.00 3.00
George Burgard 10.79 10.00
Thomas Haywood 5.08 4.00
Robert Hedman 4.83 6.00
David Lee Hill 11.25 10.25
James Howard 6.33 2.33
Kenneth Jernstedt 10.50 3.00
C. H. Laughlin 5.20 2.20
Frank Lawlor 8.50 7.00
Robert Little 10.55 10.00
William McGarry 10.29 8.00
George McMillan 4.08 4.50
Robert Moss 5.00 2.00
Robert Neale 15.55 13.00
John Newkirk 10.50 7.00
Charles Older 10.08 10.00
Edmund Overend 5.83 5.00
Robert Prescott 5.29 5.50
Edward Rector 6.52 4.75
William Reed 10.50 3.00
C. Joseph Rosbert 4.55 6.00
J. Richard Rossi 6.29 6.00
Robert Sandell 5.27 5.00
Charles Sawyer 5.27 2.00
Frank Schiel 7.00 4.00
Robert H. Smith 5.50 5.00
Robert T. Smith 8.73 8.90
Fritz Wolf 2.27 4.00
You can see the difference between between credit s and victories. Actually because of this a few were not credited has aces has they should have been like Fritz Wolf and joe Rosbert. 9 pilots really wewn't aces.
For Marine squadrons like Boyington's VMF-214 the Squadron IO had the final say in victory credits. I visited Frank Walton a number of times in Hawaii and he told me he never denied Boyington on a claim he made. Now how's that for a chain of command. Deny your CO a kill and he gives you a bad fitrep.
VMF-214 was actually a very experience group of pilots having both 1 and 2 tour vets many with previous kills with the new guys mixed in.
Sorry for the long winded reply but you asked the question.