I think the missing ones are these (mokda will confirm if it works)
{0x20010101,640,480,60,VIDEO_REGION_NTSCM,VIDEO_ADAPTER_RGBSCART}, //640x480 NTSCM 60Hz RGB
{0x20020202,720,480,60,VIDEO_REGION_NTSCM,VIDEO_ADAPTER_RGBSCART}, //720x480 NTSCM 60Hz RGB
{0x20010103,640,480,60,VIDEO_REGION_NTSCJ,VIDEO_ADAPTER_RGBSCART}, //640x480 NTSCJ 60Hz RGB
{0x20020204,720,480,60,VIDEO_REGION_NTSCJ,VIDEO_ADAPTER_RGBSCART}, //720x480 NTSCJ 60Hz RGB