I'm a corporate development expert with 30 year's experience in partnerships, JV's, sales channels, product development and marketing.

1a) Jargon would be "integration partner", integrated component provider, or "ingredient brand". There are a bunch more depending on how you want to position things.

1b) Needs some clarification. If you mean you are selling a pre-manufactured, complete product that is being branded and re-sold by another company, that would be a white label manufacturer/provider.

Examples of these arrangements can be found two ways.
Subscribe to an industry research report that focuses on sales/revenue statistics (Gartner may be a source for this) or work with a consultant or someone like me who has put together these types of channel partnerships who can provide some projections based on some basic assumptions from you.

Happy to help you in this area, quick chat or a project. Feel free to connect.

JC