The equals sign do not need to be obvious, and as you say, some have eliminated it. Your new collection has spawned some ideas for me:
#189, without an icon: the way you connected the n into the e, can you do that with a one, gradually changing colors into black so that you could sort of see an equals sign in the transition... might be interesting.
#184 is a nice simple icon, although I think it would be just as effective upright as opposed to angled. And if so, to recreate an image that you did before (with an upper case N) the "1" might be slightly larger.
#185 is worth pursuing also, perhaps as a solid red or black n1, then with a black equals sign, or somehow with the equals sign within the joining loop between the n and the 1.
#177 and #181 are interesting, but lose the "1" part for me, and if anything, I think I slightly prefer variations of a lower case n.
The nequalsone part needs to be recognized as three words by more than just colors, in case of a black and white reduction.
Thanks for your efforts!