it seems both camera´s RAW format is not supported right now in XnView Classic 2.52.2.
I own a recently released OM-5 II and ORF files cannot be displayed. Well, it came out just a few months ago.
However, I downloaded sample ORF files from previous model OM-5 (mark I) and these cannot be displayed either, despite being released in 2022 already.
I wonder if certain formats cannot be supported at all due to missing/unavailable data?
Or is it that just noone requested? If so, here´s a request

Well, I´m afraid I cannot contribute much besides providing sample files, but if needed, please let me know.
Thank you!