In my experience grown up Catholics usually internalize more abstract definitions of God. Something between Love, Wisdom, Conscience and Inner voice, Goodnes,...

From the catholics I have close enough relationships I figured they internalized this kind of definiton. And as a kid by often overhearing my parents "marriage group" I figured this is quite common.

There was also a research (not sure how valid) that asked christians to draw God. Kids drew Jesus or old man with a grey beard watching from the sky. However grownups drew something abstract, like symbols, hearts or colors....

But if you will ask christians for a definition of God they will probably give you a textbook definition while not really believing in it.