Cessna 172 Panels are done in HELVETICA font (Always bolded).
For me ARIAL is a close second.

Helvetica Font: https://freefontsfamily.com/helvetica-font-family/


Other notable aircraft fonts are 
News Gothic Font: https://fontsgeek.com/fonts/News-Gothic-Regular
Bahnschrift Font: https://fontsgeek.com/bahnschrift-font
MS 33558 Regular font (Standard millitary font): https://www.wfonts.com/font/ms-33558
Calibri
Latha font
Gordon Medium
AV Semi round straight
Futura
Gill Sans


B612 Font (for Avionics Displays ie Airbus): https://b612-font.com/


Specific components:
Turn Coordinator uses Universal Bold: https://fontsgeek.com/fonts/Universal-Bold