The solution lays up in the tree of TeX system.
It is in
kpathsea library. Which uses
/usr/local/texlive/xxxx/texmf.cnf to set search paths for the various types of files the system uses.
So in the above mentioned
texmf.cnf file add the following line:
OSFONTDIR = /System/Library/Fonts//;/Library/Fonts//;/Users/username/Library/Fonts//
username is the output of the command
whoami in Terminal.app.
You can also add other directories, if you don't want to install the fonts you use for typesetting in the regular directories.
You can look at
/usr/local/texlive/texmf-dist/web2c/texmf.cnf for furthermore settings that might be useful to you in the future.
To test the setting you've made above run the command:
$ kpsewhich --expand-path '$OSFONTDIR'
Which would output:
Hope this is helpful enough.