This table is generated by XymphBot script rankMappers.php and ranks the top-100 most prolific map authors by their number of map pages on the wiki (state of 2022-10-24 08:50 CDT):

Mapper	Map Count
Paul Corfiatis	285
Mike MacDee	185
James Paddock	160
Michael Jan Krizik	153
Alexander S.	147
Scwiba	144
Samuel Villarreal	136
Shadowman	120
Matt Powell	113
Paul DeBruyne	111
Zachary Stephens	107
Richard Frei	104
Walter Confalonieri	102
Brett Harrell	100
Adam Windsor	97
Xaser Acheron	96
Stephen Clark	90
Josh Sealy	88
Sarah Mancuso	88
Jon Vail	86
Tomás Soares	83
Erik Alm	80
Sandy Petersen	79
Pinchy	78
Joshua O'Sullivan	77
Nicolas Monti	75
Andrea Gori	72
Adam Woodmansey	69
Cheesewheel	69
Matt Cibulas	69
James Cresswell	68
Paul Fleschute	68
Brayden Hart	67
Nigel Rowand	66
Scypek2	66
Ian Wilson	64
Clippy Clippington	63
Eugene Guschin	63
Donnel Enriquez	60
Daniel Jakobsson	59
TimeOfDeath	58
Björn Ostmann	57
Christen Klie	57
Daniel Gimmer	57
Thomas van der Velden	57
Mike Watson	56
Christian Hansen	55
Franck Livolant	55
Seongbae Park	55
Roberto Lopez	51
Jeffrey Graham	50
TheMionicDonut	50
Tim Heydelaar	50
Anthony Czerwonka	49
Arthur O.	49
Sverre André Kvernmo	49
Emil Brundage	48
John Romero	48
Anonymous	47
Christopher Lutz	47
Matthew Little	47
American McGee	46
James Caldwell	46
Riderr3	46
Alex Scott	45
Christopher Shepherd	45
Cyriak Harris	45
Ilya Lazarev	45
Rand Phares	45
Dzyan Kelsick	44
Lihanchi	44
Steven Phares	44
Malcolm Sailor	42
Travers Dunne	42
Adam Post	41
Blake Collins	41
Jan Van der Veken	41
Michael Fraize	41
Sergey Andreevich Burow	41
Adolf Vojta	40
BigMemka	40
Jason Root	40
Fiend	38
Glen Christie	38
Memfis	38
Pavel Tvrzník	37
Sincity2100	37
Alex Decker	36
Brian Knox	36
FireSeraphim	36
Ofisil	36
Ty Halderman	36
Darryl Steffen	35
General Roasterock	35
Justin Kelly	35
Kristian Käll	35
Michal Kurowski	35
Kristian Aro	34
Matthew Edwards	34
Tango	34

This table infers no opinion about mappers, their works, or their wiki coverage. Consider it merely "Fun with bot scripting, part XX". :-)