Other than XfceTerminalI also use both Xterm and Kitty I'll post my .Xresources file below.
Code:
XTerm.termName: xterm-256color
XTerm.vt100.foreground: green
XTerm.vt100.background: black
xterm*font: *-fixed-*-*-*-18-*
XTerm.vt100.locale: false
XTerm.vt100.utf8: true
XTerm*faceName: mono
XTerm*faceSize: 20