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I would use the old Herald Bobroff AstroAtlas very detailed charts for checking out the Magellanic Clouds.
The first thing I noticed when I got that atlas was that it had quite a few open clusters marked, where the first edition of Uranometria instead had globular clusters marked for the same objects.
I can't find the reference, but going from memory, I read that some 40 or so objects originally identified as globular clusters in the Magellanic Clouds - because they looked like globular clusters - were subsequently found to not be globular clusters because they were bluer and not quite as round. As such, they weren't really open clusters either.
That was over 20 years ago, and I don't know if any more work was done on those objects that resembled globular clusters. I always thought they should have been classified as a new type of DSO, since they didn't look like open clusters to me.
Regards,
Renato
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