I see that Shriinivas has an animated directory for the 2,600 Carnegie Mellon .BVH motion capture files. Released November 2023, you get little munchkins in .GIF animations which show each motion-capture.
The .BVH files are linked with a named link alongside each animation, but note that these don’t lead to the Poser versions. For Poser you want the cmu-ecstasy-motion-bvh-poser-friendly-2012 freebie archive. But the names in each set are the same. Thus Shriinivas’s “90_09” means that in the Poser files you need to look in folder “90” and there find the file “90_09.bvh”.
Scroll down his page to see the link to sub-pages for named ‘Animation Categories’, e.g.
Instructions for loading .BVH to a Poser figure, here. Sadly there’s still no drag-and-drop of .BVH in Poser.