Understanding Listing Restrictions as a Partially Handmade Seller

Currently I anticipate on all of my listings being handmade. At a later date I may have non-handmade products and I am wondering how that works if you start as a handmade seller? I understand that as a handmade seller that you are under the professional selling plan (with the monthly fee waived). I couldn’t really find much help for these types of question though:

If you sell both handmade and non-handmade, are there certain requirements you must meet (ex: cannot sell over X orders of non-handmade products or maybe that more than 50% of sales must be handmade)? Where did you find that information? Can you transfer a handmade listing into a non-handmade listing? Or do you have to start over with a completely new listing and lose all of the sales/relevancy. (say you’ve made a lot of sales over time, and found a better way of make a product through a manufacturer instead of handmaking) Are there any differences (besides having to be handmade) between a handmade amazon seller and a standard professional amazon seller? specifically with respect to the tools you are given by as a seller and how you are seen by customers? Is there any reason you shouldn’t sell as a handmade seller if you make your products? Like for example I’ve heard that handmade listings are sometimes throttled or harder to find, but I am not sure if that is just a myth.

Any info would help! I would just hate to start off as a Handmade seller and regret it because I don’t understand all the backend stuff while setting up.