I created this symbology in ArcGIS Pro. They are based off 2 different attributes

AttributeA is expressed through the solid fill which I created 4 different symbology classes from
To show AttributeB on top of AttributeA I added a hatched fill which I then added expressions for the color and line width based on AttribueB
Of course when I uploaded this layer to AGOL it lost the custom symbology. I know I can control symbology more using an expression in AGOL but I was wondering if there is a way to get this same hatched effect with a color underneath (not just transparent) in AGOL.
There is going to be quite a few different layers that are like this- so creating a separate layer to show this won't work. The layer also already has a large number of fields so I am really trying not to add more fields if possible.