To add new peds, use fastman's limit adjuster plugin.

Here is a tutorial:

https://www.youtube.com/watch?v=KSzGUf1qMMo&ab_channel=WhamDieMoe

Add this line into peds.ide file.

***, WFOST3, WFOST3, CIVFEMALE, STAT_STREET_GIRL, woman, 1, 0, man, 1, 2, PED_TYPE_GEN, VOICE_GEN_WFOST, VOICE_GEN_WFOST
***, WMOST2, WMOST2, CIVMALE, STAT_STREET_GUY, man, 1000, 0, man, 8, 1, PED_TYPE_GEN, VOICE_GEN_WMOST, VOICE_GEN_WMOST
***, WMORI2, WMORI2, CIVMALE, STAT_GEEK_GUY, man, 1000, 1, man, 10, 10, PED_TYPE_GEN, VOICE_GEN_WMORI, VOICE_GEN_WMORI
***, CWFYFR4, CWFYFR4, CIVFEMALE, STAT_STREET_GIRL, woman, 1000, 0, null, 1, 1, PED_TYPE_GEN, VOICE_GEN_CWFYFR2, VOICE_GEN_CWFYFR2
***, WMYCLOT2, WMYCLOT2, CIVMALE, STAT_STREET_GUY, man, 1040, 0, null, 1, 4, PED_TYPE_GFD, VOICE_GFD_WMYCLOT, VOICE_GFD_WMYCLOT
***, WFYCLOT2, WFYCLOT2, CIVFEMALE, STAT_STREET_GIRL, woman, 1000, 0, null, 1, 4, PED_TYPE_GFD, VOICE_GFD_WFYCLOT, VOICE_GFD_WFYCLOT
***, WMYST2, WMYST2, CIVMALE, STAT_STREET_GUY, man, 80, 0, null, 4, 3, PED_TYPE_GEN, VOICE_GEN_WMYST, VOICE_GEN_WMYST




Don't forget to enter ID you want ped to have.