We do have turkey so I'm not a lot of help.
But we do "platter" on Christmas Eve - lots of different things (mostly cold) that are laid out on the table for everyone to help themselves in a relaxed fashion. Cooked and cured meats (ham, turkey, salami, parma ham, braseola, good corned beef, smoked duck etc), seafood (smoked salmon, cooked prawns, cooked squid rings, hot smoked salmon..), cheeseboard, veg sticks (carrots, peppers, cucumber), breadsticks or slices of naice crusty bread, dips (hummus, salsa, ...), bowls of cherry tomatoes and olives and salad leaves....sometimes some hot sausage rolls or a pack or 2 of M&S party food nibbles...
Basically whatever we have seen that looks good (we don't do ALL those every year - just a nice selection that is adequate for the numbers involved).
The year that is not mentioned at home, where DSiblings went to put the turkey in the oven and found it green on the counter, they thawed out steaks from the freezer in a hurry and BBQ'd those instead. Which has been repeated a few times since then, on purpose
. (DDad is quite happy to light the coals in winter and wear a coat while cooking).
We have also BBQ'd a leg of lamb in the middle of winter, which was lovely. (You can get the butcher to bone it so it can be laid flat to help more even cooking).