Check if you have vegans but don’t worry if you do. There are loads of plant based options in ordinary Supermarkets now and they will be labelled as vegan. They will help you through no vegan guest would just leave a non vegan host to figure it out.
Dips are usually popular hummus, guacamole, etc with breadsticks and chopped veggies.
Mini spring rolls, mini samosas, pakoras, bhajis, some sweet mango dip for them easy to buy at the deli.
Hot or cold pizza slices
Pasta salad, rice salad (you don’t have to make them) you can buy them.
Fruit makes a nice option grape’s especially maybe some little satsumas or clementines preferably seedless.
If you do some cold plain new potatoes anyone can have them and add dips
Heck get a Colin cake (or similar) not just for grown ups. Or maybe some pain au chocolate or other pastries.
Make sure if you are making a lot you get some containers to either store yourself or send guests home with so you don’t have any waste. Or ask them to bring their containers. Everyone is waste conscious now they will be happy to clean you out. 🤣