Ixo are around for around 30 years, mostly in 43, they have made thousands of models – and all were metal.
As all mass-market models are.

It is the source for most of these world-wide distribution models in 43, 24 and now 18 labelled Hachette, Fabbri, whatever, and Whitebox and and and.

They also made some niche models in resin, under the label Premium-X, but these are rare birds, like the Stutz.

Also these high detail 1:8 subscription kits.
The lately shown C7 looks suspiciously similar to the stillborn copy that Z-Models (Solido, GTS, Otto) showed on the last pre-covid toyfair in 2020.