A couple of weeks ago, I found, separated and repotted a Keiki from my Dendrobium Cretaceum x Anosmum - and then, one on my Dendrobium Sulawesiense/Glomeratum.
And now, these are growing on my Cretaceum x Anosmum:
And this one, as well, also on the Cretaceum x Anosmum:
I don't think the one at the base of the plant is a keiki, its a new growth. If you think that you are getting too many keikis and they are occurring throughout the year, take a look at your fertiliser - it may have too much nitrogen ( N )
Yeah, these started forming before I switched to a new fertilizer, so you're probably right, As for the one at the bottom, you may be right with that too. I'll have to keep an eye on it.