: Again I understand this. And as I said, I can see them all stemming from his wife's features, without all looking exactly alike. because if they all looked like his wife, granted they could tell eachother apart, but how would the different races be so readily noticed by those outside of the elvin ancestory. Like Hobbits or humans.

In "Many Meetings" there is a section of banter between an elf and Bilbo about whether the elf could spot the inclusion of a line written by Aragorn inserted in one of Bilbo's poems. The poem was about Aragorn's remote ancestor Earendil. The elf failed to spot it, but said all mortals and their works appeared alike to him. The corollary is that all elves probably appeared alike to mortals, unless they had received particular education in elven lore, or came from a society with cultural ties to specific elven groups. Gildor was both surprised and pleased that Frodo recognised him and his group as Noldor and had the facility to speak "High Elven" (Quenya). Gildor was obviously not expecting this level of discernment and education in Frodo, even though he may have been aware that Frodo was kin to Bilbo the Elf-friend.

The short answer is that there is no reason why non-elves should have been able to distinguish between elven social/racial groups. The Silmarillion is written from an elven view point (perhaps passing through an Edainic filter), and the fictional sources for the LOTR itself were written by a group of Hobbits (Bilbo, Frodo, Sam etc.) who were unusually learned in matters elven, aided by the availabilty of lore from Gondor and the Dunedain whose culture was heavily indebted to the elves (the Gondorians spoke an Elvish language - Sindarin).
Your standard "human in the street" of Middle Earth would have had little chance of deciding who was Noldor or Silvan or Sindarin.