Can guinea Pigs eat the following vegetables?

[♥ Saa-r-aah ♥]

brocoli

peppers

cucumber

tomato

spinach

hay

oranges

carrots

celery

parsley

cauliflowe leaves

grapes

romaine lettuce

i was doing research on the internet
and various websites said they can eat them vegetables.

Can you correct , if any of them are wrong?
Thanks x