I would go ahead and get a .30 cal suppressor for your centerfire guns and you will be more able to make more use of it in all your other rifles.You can get most with quick attach flash hiders or compensators in 1/2" and 5/8" threads. Decibel reduction will be about the same for 5.56 and .30 caliber suppressor on you 5.56 rifle. Get a rimfire suppressor for your rimfires. Centerfire suppressor are mostly welded and not as easy to clean as rimfire suppressors that come completely apart. Rimfire suppressors are also lighter and more balanced for a smaller rimfire rifle. Rimfire suppressors will get filthy. The quick attachments stay screwed on and detented in place better and don't back off which may led to baffle strikes, which is very bad. There isn't as much difference in weights between centerfire suppressor brands as you might think, at least there wasn't when I was looking to buy my first one. That may have changed as of late, I don't know.
