Fujifilm Grain Comparison: GFX100S II vs. X-T5

I’m planning to do a number of comparison tests between the JPEGs from the Fujifilm GFX100S II and my X-series models, like the Fujifilm X-T5. What’s different? What’s the same? I haven’t come to very many conclusions yet. There’s clearly a difference, but it seems so subtle it is tough to put a finger on what exactly is divergent.