I think I would need more info at least as to style. Have you made sure you can find a sink that will fit that will be the first step. As for the faucet and other things they often do not all match . The water dispenser I find is always not quite the same as the rest.

Sure I will add photo of the kitchen . Everything is going to go stainless and I’m also contemplating changing the crown molding and pulls

Of the current sink

So this is kind of a duplicate post and you mentioned you are on a budget . I said on the other post just wait for a bit before doing anything since I believe when you start you will open a whole big can of worms

This post is about the sink, the other was lighting and molding. I don’t want to redo the whole kitchen if that’s what you mean by being on a budget

I agree with Patricia. Some things I lived with because I didn't want to spend or do anything more until I was ready for the full deal. For instance we installed new baseboards and door trim everywhere but left the door trim to the kitchen undone. Yep, it's not finished because I knew we would be doing a kitchen remodel someday. Someday is now and the contractor is moving one of the doors and taking out pocket doors. I didn't want to put all that work and money fixing it up knowing it would be taken down. But I don't know how involved taking out a undermount sink and sticking in a new one works. A big can of worms is right.

Many manufacturers offer matching faucet sets and that would be easier so as to have the same style/shape and finish. Quality and pricing can vary a lot, but if you find a good source, they should carry a few lines so you can more easily compare. You may also have to consider the sizes of the holes in the granite. Suggest getting sink first

No- your faucets do not have to be from the same manufacturer as your sink. Just as all your appliances need not be from the same manufacturer. Pick each item based on its quality and functionality for your lifestyle. No need for a "suite" of appliances.