The tattoos in FIFA 16 are in the folder (data/sceneassets/tattoo) with a slighter different file name.
If the FIFA 15 file name was "playerskin_7784_textures" then the FIFA 16 file name would be "tattoo_7784_0" just without the quotations
This is a list I found on the EA Website:
[Argentina] Primera División
•G. La Plata
•Mar del Plata