Can I add my own SVG icons instead of Font Awesome?

Using the default theme, I want to change the icons in the section directly beneath the hero: https://imgur.com/ouMZjUO

However, the selection defaults to only allowing choices from the included ‘Font Awesome’ catalogue.

I have my own SVGs and have created & uploaded a custom font to WP via another plugin, but it’s not available to me in the Mesmerize customizer.

Also tried browsing through the WP folders on my server to try find where Font Awesome assets are stored, but i see in the code that they are pulled from another server as needed.

Appreciate any assistance.