Check the
esoui source code on github and search for the zo_bounty... :New function. There the object will be created. Most of the time is defined in a xml file and called something like BOUNTY_KEYBOARD or BOUNTY_PANEL etc.
The creation is located sometimes in the lua file esoui/ingame/bounty...lua,somewhere at the bottom.
https://github.com/esoui/esoui/blob/...ntydisplay.lua
Seems to inherit from the zo_stats_display. Check the same folder's subfolder keyboard and the lua/xml files in there.