All three are members of the amphimuta group.

#19A https://www.inaturalist.org/observations/230065025
Vague tornal white spot.

#19B https://www.inaturalist.org/observations/230065027
Definite white cilial spot in pic 1.
Upperside with broad brown borders on both FWs & HWs suggest Arhopala norda/major.
Upperside+tornal white spot = female Arhopala norda.

#19C https://www.inaturalist.org/observations/230065028
Tornal white spot in pic 1.
Upperside HW mainly brown pic 4 = white tornal spot suggest female A. norda.

There is a strong suggestion that all three are Arhopala norda.