10 bit HLG only exporting as 8 bit

Having total brain freeze figuring this out.

Shot 10 bit 4:2:2 HLG on Sony A1. Clips in Resolve do show up as 10 bit. I want to export 10 bit HLG either H264 or H265 for Vimeo or YouTube. However, the resulting MP4 files only show as 8 bit and therefore will not encode as 10 bit on Vimeo. Totally stumped at what I'm missing.

Select Main10 as H265 profile in export tab.

Just remembered that. Duh. I knew that. Long-haul lockdown brain...

ProRes 422 or ProRes 422HQ is 10-bit and if your video is going to YT avoids yet another 265 recode. Also, of course, is 422. HQ provides a nice boost in data rate.