Probably those figures which were originally designed in 3D software… which were previously printed and used as masters for resin figure production. I know Peter Samofalov designed the last modern US figures in 3D and Legend offered them in resin.
I’d be very much surprised if all the traditionally sculpted figures in Legend portfolio become available as 3D printed offerings.
Mario
PS I’m not a big fan of 3D figures myself, I find resin figures much easier to work with.