So that's why the models look more expressive in the PS4 version.

a lot of objects use different layouts of said uvs
some use uv0 as dirt, uv1 as diffuse and uv2 as stickers, some don't even have uv2, others use uv0 as diffuse, uv1 as dirt and uv2 as stickers, so basically speaking, the layout and amount of uvs is not uniform across models (hell, the layout changes between the PS3 and PS4 versions of the same character models)

For those of you wondering still if the PS4 models can be ripped now:

and yes, I am working on prepping these for submitting to the site as well, though something to keep in mind about LBP's models is that they use THREE UV maps for a lot of models including the characters, the first being the main detail, second being decals, and third being for stickers, the models will need to be submitted in formats that aren't .obj (such as .blend or .fbx) to preserve their full in-game detail, these still aren't rigged yet and it'll probably take awhile before they will be, though these models ALSO use shape keys for things like facial expressions, both of which of these I'm aiming to at least recreate for the time being in separate uploads.
For now though, hoping to at least provide what I can!

What was used to rip these?

@The 3rd Brother: PlayStation 4 files cannot be extracted yet, and probably won't be for a while.

What about the HD Sackboy model on the PS4 version?