Couldn't find the list barely, so figure i'd post up the Gmod playermodel list that comes with Garry's mod.
Half Life 2(and Portal)
models/player/alyx.mdl
models/player/barney.mdl
models/player/breen.mdl
models/player/combine_soldier.mdl
models/player/combine_soldier_prisonguard.mdl
models/player/combine_super_soldier.mdl
models/player/corpse1.mdl
models/player/eli.mdl
models/player/gman_high.mdl
models/player/kleiner.mdl
models/player/magnusson.mdl
models/player/monk.mdl
models/player/mossman.mdl
models/player/mossman_arctic.mdl
models/player/odessa.mdl
models/player/p2_chell.mdl
models/player/police.mdl
models/player/police_fem.mdl
models/player/charple.mdl
models/player/soldier_stripped.mdl
models/player/zombie_classic.mdl
models/player/zombie_fast.mdl
models/player/zombie_soldier.mdl
Half Life 2 Citizens
models/player/group01/female_01.mdl
models/player/group01/female_02.mdl
models/player/group01/female_03.mdl
models/player/group01/female_04.mdl
models/player/group01/female_05.mdl
models/player/group01/female_06.mdl
models/player/group01/male_01.mdl
models/player/group01/male_02.mdl
models/player/group01/male_03.mdl
models/player/group01/male_04.mdl
models/player/group01/male_05.mdl
models/player/group01/male_06.mdl
models/player/group01/male_07.mdl
models/player/group01/male_08.mdl
models/player/group01/male_09.mdl
Half Life 2 Rebels (Gangster)
models/player/group03/female_01.mdl
models/player/group03/female_02.mdl
models/player/group03/female_03.mdl
models/player/group03/female_04.mdl
models/player/group03/female_05.mdl
models/player/group03/female_06.mdl
models/player/group03/male_01.mdl
models/player/group03/male_02.mdl
models/player/group03/male_03.mdl
models/player/group03/male_04.mdl
models/player/group03/male_05.mdl
models/player/group03/male_06.mdl
models/player/group03/male_07.mdl
models/player/group03/male_08.mdl
models/player/group03/male_09.mdl
Half Life 2 Citizen (Refugee)
models/player/group02/male_02.mdl
models/player/group02/male_04.mdl
models/player/group02/male_06.mdl
models/player/group02/male_08.mdl
Half Life 2 Medics
models/player/group03m/female_01.mdl
models/player/group03m/female_02.mdl
models/player/group03m/female_03.mdl
models/player/group03m/female_04.mdl
models/player/group03m/female_05.mdl
models/player/group03m/female_06.mdl
models/player/group03m/male_01.mdl
models/player/group03m/male_02.mdl
models/player/group03m/male_03.mdl
models/player/group03m/male_04.mdl
models/player/group03m/male_05.mdl
models/player/group03m/male_06.mdl
models/player/group03m/male_07.mdl
models/player/group03m/male_08.mdl
models/player/group03m/male_09.mdl
Counter Strike: Source / Day Of Defeat: Source
models/player/riot.mdl
models/player/gasmask.mdl
models/player/urban.mdl
models/player/swat.mdl
models/player/phoenix.mdl
models/player/arctic.mdl
models/player/guerilla.mdl
models/player/leet.mdl
models/player/hostage/hostage_01.mdl
models/player/hostage/hostage_02.mdl
models/player/hostage/hostage_03.mdl
models/player/hostage/hostage_04.mdl
models/player/dod_american.mdl
models/player/dod_german.mdl
Now these are mainly Vanilla playermodels on GMOD, use them to not have to have a lot of addons for people to upload. Makes it easier on players joining also!
Half Life 2(and Portal)
models/player/alyx.mdl
models/player/barney.mdl
models/player/breen.mdl
models/player/combine_soldier.mdl
models/player/combine_soldier_prisonguard.mdl
models/player/combine_super_soldier.mdl
models/player/corpse1.mdl
models/player/eli.mdl
models/player/gman_high.mdl
models/player/kleiner.mdl
models/player/magnusson.mdl
models/player/monk.mdl
models/player/mossman.mdl
models/player/mossman_arctic.mdl
models/player/odessa.mdl
models/player/p2_chell.mdl
models/player/police.mdl
models/player/police_fem.mdl
models/player/charple.mdl
models/player/soldier_stripped.mdl
models/player/zombie_classic.mdl
models/player/zombie_fast.mdl
models/player/zombie_soldier.mdl
Half Life 2 Citizens
models/player/group01/female_01.mdl
models/player/group01/female_02.mdl
models/player/group01/female_03.mdl
models/player/group01/female_04.mdl
models/player/group01/female_05.mdl
models/player/group01/female_06.mdl
models/player/group01/male_01.mdl
models/player/group01/male_02.mdl
models/player/group01/male_03.mdl
models/player/group01/male_04.mdl
models/player/group01/male_05.mdl
models/player/group01/male_06.mdl
models/player/group01/male_07.mdl
models/player/group01/male_08.mdl
models/player/group01/male_09.mdl
Half Life 2 Rebels (Gangster)
models/player/group03/female_01.mdl
models/player/group03/female_02.mdl
models/player/group03/female_03.mdl
models/player/group03/female_04.mdl
models/player/group03/female_05.mdl
models/player/group03/female_06.mdl
models/player/group03/male_01.mdl
models/player/group03/male_02.mdl
models/player/group03/male_03.mdl
models/player/group03/male_04.mdl
models/player/group03/male_05.mdl
models/player/group03/male_06.mdl
models/player/group03/male_07.mdl
models/player/group03/male_08.mdl
models/player/group03/male_09.mdl
Half Life 2 Citizen (Refugee)
models/player/group02/male_02.mdl
models/player/group02/male_04.mdl
models/player/group02/male_06.mdl
models/player/group02/male_08.mdl
Half Life 2 Medics
models/player/group03m/female_01.mdl
models/player/group03m/female_02.mdl
models/player/group03m/female_03.mdl
models/player/group03m/female_04.mdl
models/player/group03m/female_05.mdl
models/player/group03m/female_06.mdl
models/player/group03m/male_01.mdl
models/player/group03m/male_02.mdl
models/player/group03m/male_03.mdl
models/player/group03m/male_04.mdl
models/player/group03m/male_05.mdl
models/player/group03m/male_06.mdl
models/player/group03m/male_07.mdl
models/player/group03m/male_08.mdl
models/player/group03m/male_09.mdl
Counter Strike: Source / Day Of Defeat: Source
models/player/riot.mdl
models/player/gasmask.mdl
models/player/urban.mdl
models/player/swat.mdl
models/player/phoenix.mdl
models/player/arctic.mdl
models/player/guerilla.mdl
models/player/leet.mdl
models/player/hostage/hostage_01.mdl
models/player/hostage/hostage_02.mdl
models/player/hostage/hostage_03.mdl
models/player/hostage/hostage_04.mdl
models/player/dod_american.mdl
models/player/dod_german.mdl
Now these are mainly Vanilla playermodels on GMOD, use them to not have to have a lot of addons for people to upload. Makes it easier on players joining also!