The Texas Instruments ICL7652 looks quite much like the TLC2652A / TLC2652, and the noise density at low frequencies is certainly not impressive. I suspect the ICL7650s would show similar performance, given the age and topology of the device, but I do not know. For this reason, I was thinking about measuring the ICL7650S, but I'm finding the OPA189ID increasingly interesting. The wide supply voltage span is also a bonus, which makes it easier to use in some designs. One thing I have in mind is a buffer for a 10 V reference, for which the OPA189ID seems quite appropriate...
BR