Zinc is fine - if you don't want stainless
Why not use anti-seize on everything? What is so hard about that that you can't do everything? Zinc, steel, stainless into aluminum or anything the anti-seize will stop all of the problems. You can use anything as long as it is of the strength that will allow proper torquing. The only problem you need to watch for is that most hardware stuff is basic grade 2 - just over the strength of butter and can twist off easily. On simple stuff, like screwing on your turn signal lenses this is plenty good, but not good enough as a bolt to mount engine in frame. Use either grade 5 or grade 8 equivalent - I forget how metric system designates this, but they do.