Hi Lucas,
In order to change the View All icon, you’ll need to override the theme by going to Tools > Jambo Commands > Override Theme. The file(s) you’ll want to override are answers-hitchhiker-themes > universalsectiontemplates > standard.hbs and the grid-two-columns.hbs or grid-three-columns.hbs if you’re using those files in your experience as well.
In the newly created theme override files, you can then change “iconName” to “iconUrl” similar to what Micaela did for FAQ accordion cards in the link you provided. It will look something like this:
<div class="HitchhikerResultsStandard-viewMoreLabel">{{_config.viewMoreLabel}}</div>
<div data-component="IconComponent"
data-opts='{"iconUrl": "https://www.brandname.com/themes/simple/images/arrow-down.svg"}'
data-prop="icon">
</div>
Since you are overriding the theme, make sure to pay attention to this file any time you upgrade your theme. You’ll most likely want to pull the new file in the theme upgrade and make this change again.