Nice pix! cool to see the progression!
Last month I found a "monster" Neo (ten fans!) at a garden center - it had two spikes that were finished, so I asked for and got a discount ...
When I got it home I noticed 'nubbies' on a few other fans - I have been hoping they are spikes, but figured they were likely new fans ... look very much like your unidentified nubbie and haven't grown much since I got the plant ... *sigh*
BUT - a previously unnoticed by me nubbie (hiding behind other fans) started to poke out, and now is showing a stem, and definitely looking like a spike!
I look forward to watching the progression of yours - thanks for sharing!