This paperwork is standard. The company wants to protect itself against a scenario in which you, after being steeped in its business, come up with some way to do it better/more efficiently/cheaper but claim the idea came to you while you were at home in the shower and thus they have no rights to it. Your out is the form that lists the 'inventions' you might have that you want excluded from this clause. You can always…
That said, it is always a good idea to keep really good records of what you're doing on your time, and the things you have "baking" when you join a company. That will help you in two ways, one it makes this paperwork trivial to fill out [1] I know of one case where it started a discussion with some IP people at the hiring company who then offered a lump sum to purchase the disclosed IP.
It is pretty standard language these days. Given the hiring challenges you have the option of working with a lawyer to create an agreement that is more agreeable to you, however failing to come to terms on that agreement is a perfectly reasonable reason for someone not to hire you, even if they had previously said they would.
Last tip, if its something that keeps you up at night you're probably not going to be happy, long term, working for anyone but yourself.
[1] One tip, you don't have to have list details here just a reference identifier, so for example if you're working on "Studmuffin: The Game" just mention "all rights related to the game: Studmuffin: The Game" on your disclosure form, and later if the question comes up (like they try to say you some how worked on it on their time) you can refer back to your dated notes from before your employment and your records that you kept on time spent that wasn't company time or company equipment.