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

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

slow Mongodb regex for 200 million documents

I have a MongoDB collection with around 200 million entries for different websites. The documents are structured like this: