The sprites resource doesn't have this font because "The character names (in battle) are not in-game fonts that can be ripped. They are their own sprites not made of a font, so that font would need to be classed as a custom and would need most letters customly made", as stated in one of the comments. It seems that there's no such font at all and these letters are drawn from scratch. Maybe somebody over here tried to make names for different characters in the style of this menu? Or should I just try to make the letters I need myself?