Take a look at the Thermalright AXP120-X67. I am using it with my Gigabyte z690i ITX board which has a built in io shield and a really tall m2 heatsink.
Part #: 5M10U50350
Description: MECH_ASM PCI BKT I350-T4 QUAD PORTS GEA
Link: https://lenovo.encompass.com/item/12575455/Lenovo/5M10U50350/
I also know of a Redditor who can 3d print the baffle.