FC2 videos are scripted with dialogue, sex scenes, production and are the main videos she makes the naming scheme is "vol". Patreon videos are short clips and have a higher quality camera? they don't have sex scenes just groping, sexy outfits, breast shaking and props. Onlyfans seems to be a mix of both FC2 and patreon videos there are clips similar to what she does on patreon but she also has sex scene videos like the ones on FC2 but their production quality is lower.
No one knows because it looks like her OF videos aren't being shared here you could join and share them she also shows herself on discord in vc if you want to see how that is you need to be a subscriber to join