Is `{ field: { $in: [null, 'something-1', 'someting-2', []] } }` performance wise okay to use than separate query?

Question

Query 1 : { field: { $in: [null, 'something-1', 'someting-2', []] } }

Query 2 :

{
    $or: [
        { field: { exists: false } },
        { field: { $in: ['something-1', 'something-2'] } },
        { field: { $size: 0 } }
    ]
}

Query 2 is hard to maintain imo & hence I tried Query 1 which works as expected.

Assumptions where I am going to use this :
field will always be an array string no matter what, hence it will not include null or [] as a element of it. Also field is not indexed (Although If possible, then I would like to know whether query 1 & query 2 will have different if field was meant to use index)

I want to know if it is good to use Query 1 over Query 2 based on assumptions that I have for field

I tried searching documentation for this, but I didn't found any mention for this way of querying (Query 1), hence I have doubt for this approach