Purchase the coffee table to service

the sofa; the two chairs are fine with one table between.

I would choose a glass top rectangular table with drawers, to stash the daily mess.

Based on your reference to liking metal and stone and wanting to avoiding straight lines:

https://shop.reimaginedesigns.ca/products/corbett-grey-coffee-table?variant=40521917792358&epik=dj0yJnU9X1hwWlBxcDZmWS1IUmgtb2h5NTZTR2dfWF9CRWZMcTMmcD0wJm49bXowYjBGa0poVllzdnpuRWJwaFZWdyZ0PUFBQUFBR2JEdU1J

https://www.urbanbarn.com/en/product/irwin-nesting-coffee-table-set--graphite-219566.html?epik=dj0yJnU9NGxyUFc5R2laSEVlUXl1UE1iM2hMUE1yb0NDOWFWb0YmcD0wJm49MC1McTFVdjRFd0l1elVSNkRKVU1UQSZ0PUFBQUFBR2JEdWxr

Suggest taping out the different sizes of the tables you are considering and find a happy medium size wise (a nesting table has flexibility in that regard).

A rectangle, or oval, coffee table should work well within your living room. You might try something light since there are a lot of dark colors going on in the room.

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You could do a wooden coffee table, but you also have the option of doing an ottoman. Here are two ideas for what could work in your space:

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