Style wise id stay away from more tufting. as far as the others go, its hard to say without knowing the sizing on each piece.

I love the red one.

I would not get more velvet pieces. Have the sofa be the star and get different materials in for the rest.

They are all comparable in height to the couch ~30"

If I don't do velvet, should I opt for an animal print? Leather?

aren't you going to use the red rug you posted awhile back?

Choose the green to color drench the room in the same color of the wallpaper background.

Leather would be great for a lounge setting.

The wallpaper is a strong statement and I’d design the room around it and couch, with brass accessories. If you want more interest, choose a great rug and colorful art.

https://ruggable.com/products/jonathan-adler-gatsby-black-gold-tufted-rug?size=6x9&system=rug-cvr

Look on Marketplace for the tables for great deals. Spend the money on good chairs.

This is what AI came up with using some ideas from @Maureen .

I hope you're not planning on using the navy blue sofa.

https://www.potterybarn.com/products/open-box-remmy-upholstered-swivel-armchair9970762/

Your choices in the room

Sorry scale and angles are rough.

Is the sofa black or navy?/ I do not love the wallpaper now it drives everything else. This is fab all one color and awesome , but to late in the game . Sorry wallpaper really needs to be chosen later after all major pieces are there to work with.