A few more Archives:
Flash Archives v5 contained 133-141 (Mar 2009) which were in Showcase Flash v2 (Jun 2008) -- except #141.
Adam Strange v2 (March 2008) had some issues from his Showcase.

Also, the Secret Society of Super-villains collections had been prepped from their unreleased Showcase. The same may have been true of Atomic Knights, but I seem to recall waiting for a couple issues, it might not have gotten to that stage before those were canceled.

There have been smaller pickups of an issue or two -- particularly "themed" collections. Off the top of my head, The Strange Deaths of Batman had Detective 347 and B&B 115 from Showcases, New Teen Titans Omni picked up Batman/Outsiders #5, Captain Carrot collection used issues from his unreleased Showcase, etc.

Things like that made Recoloring MUCH easier with more time to work on a project, as those issues would be available far sooner than waiting for film, scans, cleanup of stories reprinted for the first time.

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