Branded document templates for my business

Hi,
I'm looking for branded document templates for my business called Demonlabs.
My website is at https://demonlabs.be
I would like to have editable templates for
- invoices
- html emails
- Profile headers for all major social media platforms (like linkedin, youtube, facebook, Instagram, etc)
- Word, Excel en Powerpoint templates for invoices, presentations, tendering and quotation etc
- SVG files that can be used for stickers and branded usb sticks and car decals, keyboard covers, mouse pads, ...
- I'm also looking for an editable template for business cards

I had this done in the past for a different company and was very happy with the result. Only problem was that the creator was advertising the result. I don't want this to happen this time. I want the work to think everything was done in house.

If you have suggestions to add to my project description, I open for that. Like a personal animation style avatar of my face, but right now this is not a priority.

I will supply the font I use, logo, background image used on the website