After some further testing, I think I might have found the problem. My project contains multiple meshes and I was trying to create an AO map for each of them, but when I inspect the GLTF with “gltf tools” it looks like it’s only exporting one of the AO maps. So I’m wondering if I can’t export multiple AOs from blender to GLTF?
If you think that might not be the case, I could still post screens of my material setup (unfortunately this is a project for work so I can’t post the actual blend file). By that, did you mean the nodes that I’m using or the actual materials panel? Thank you!