Going to answer my own question. Turns out that the USB flex cable UEE003 made for the OnePlus 9 Pro will work for the OnePlus 9 5G LE2115.
However worth noting that the connector that connects to the mainboard does not align perfectly like the exact flex cable would, but you can move it over just enough to properly connect. It may be easier to connect the flex cable to the mainboard first and then situate the USB port end into the location at the bottom of the phone housing. The USB port works fine for charging and with a USB headphone dongle, so conclusively the UEE003 is wired exactly like the UEF01A.
Hope this information may help anyone else looking for a replacement USB port for a OnePlus 9 5G LE2115 or similar variant.
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