Any request of a social media graphic is to be sent at 1080x1080 pixels Max resolution quality
Here is a helpful guide for any other requests. https://makeawebsitehub.com/social-media-image-sizes-cheat-sheet/
If a client asks for a Linkedin Banner, or Facebook banner, or eventbrite banner - The specifications will be referenced from this link above and entered into the size description of the order that has been placed.
EX: You will not see a job ticket for "Social Media Post" if the client wants an EventBrite Banner or FB Banner.
You will simply send a proof with two versions of what they are requesting at 1080x1080
This is UNIVERSAL online knowledge.