Can't find my where my fonts are defined

where are my fonts controlled? I am having a hard time locating all the different clarification of them.

(1) My theme files has info for the titles and it impacts color and bold/normal but has no impact on the actual font for titles. (see screenshot 1)

(2) I also have google fonts set up but doesn't seem to have much, if any bearing. I saved this with no h1 specified to try to default to the other files, but nothing changed. (see screenshot 2)

(3) these are my css fonts, these control the size and colors of headers, but nothing else (see screenshot 3)

The hierarchy seems a bit messed up. so I am a bit lost... thanks in advance!