Is a circuit simulation package available with models from multiple vendors?
You won't find a spice package that does what you want. Manufacturers don't have models that they give out other than the spice models that they already have, because there is a potential IP loss (a spice file that was not an approximation could easily be used to generate a circuit in silicon). Most of these models are not precision models, and only simulate basic functionality. 

A good substitute is to use b-sources which have rounding to simulate digital systems.

V = floor(V(bits)/2^16)*5


I've actually simulated systems with noise and other errors in this manner (its and equation so you can generate any kind of error and the systems had DAC's and ADC's (an MPPT solar controller). Lt spice also has noise sources that can generate error. In this manner, one can get as complex as they want.

In my experience, ENOB and noise level of detail is not always needed as it takes time to approximate a digital device. But if you had to, you could get very detailed with only a datasheet and LT spice and a little know how.