JavaScript – Sorting an array of objects by date with some dates being null

I have a huge array of objects called steamData that look like this:

Sort an array of duplicated items by placing the first occurrences first

I have an array of items that occur exactly twice, right next to eachother, like so:

Sort in each other order in an array of duplicated items in Javascript

I have an array of duplicated items like so:

Sort in each other order in an array of dublicated items in Javascript

I have an array of dublicated items like so: