So, skimming quite a few articles like 035 or 079 it shows that these anomalies do know each from some time or place, a few pairs I theorized about due to their very similar style in looks and psyc.
049 & 035: These two seem to have a lot in common with their attitude and wit, both of these items are coming into existence probably during the 14th to 17th century and just are so similar in just so many ways to count.
076 & 073 "Cain and Abel." Don't think this one needs explaining.
All of the broken god SCP's: Again this one is pretty obvious.
173 & 096: Both anomolaus effects rely on the interactants vision.