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If all else fails, Amazon sells a Blu-ray of Ran for $12.96. You could buy that to replace one of the 4K discs. I think it would be worth it in that Ran is one of the most beautiful Steelbooks I ever bought!
There is a Blu-ray of RAN but it’s not criterion.
Ran (StudioCanal Collection) [Blu-ray] https://www.amazon.com/dp/B002ZG4Q5W/ref=cm_sw_r_cp_api_glc_fabc_68YaGb2GRBEFJ
It's only like $12 on Amazon. https://www.amazon.com/dp/B002ZG4Q5W/ref=cm_sw_r_cp_api_BLbyyb2RX5FXV
It's not Criterion, but there is a Blu-Ray release: