Automated collection with multiple variants of a specific product type.

Hi to all,

I want to ask a simple question that has bothered me for ages now. I need to make an automated collection of some specific type of product, and I need to add many variants to it. For example, bed sheet sets (this is the type) that are 250280 cm and 240290 cm, and 230*260 cm (these are the multiple variants), etc. This is because I have loads of vendors that have different sizes, but these all fit a king-size bed. Any help or recommendation will be appreciated.

Thanks Dimitris

What about if I have a few product types that have to be in the collection? What is the workaround for this?

What about if you have various variants? How do you assign tags to all variants? I have not figured this out yet. I want also to mention that I have 10.000 + products and plan to add more from various vendors, I need to have easy menus and automated collections. Any help will be much appreciated.