The sheer volume of different BIM standards can be confusing in itself – and that is without even considering the
a) usefulness,
b) applicability,
c) practicality or
d) up-to-date-ness
of these different standards
In any case, a recent and decent list has been started at:
CAD addict: List of Existing BIM Standards
Some other useful links / lists:
Weblinks (big list of Standards on natspec.org)
BIM Standard and BIM Example Drawings Sharing (forum thread)
BIM Libraries | Whole Building Design Guide
BIM/IPD Aus (standards and guidelines with Australian focus)