Okay this is headcanon entirely (please don't hate me) but as an active roleplayer I've created a few worlds in my time.
And within the main one that I and my RP partner have created, there is an organisation known as the Nexus Laboratories System (or just N.L.S) (Mind you, this was before I even knew of the SCP foundation, too)
Now, if any of y'all have seen Resident Evil (The first movie) then you will be aware of the Hive. If not, google it, you'll get the idea pretty quickly.
The Nexus is fairly similar to this construct, except for the fact that it is on a global, worldwide scale, as opposed to, say, just being confined to underneath one, singular city complex.
The Nexus is renown for its positively inhumane and gruesome experiments against subjects, working under the impression that they will be able to create 'super-humans' and other anomalous entities. They have succeeded partially with this on numerous occasions, the experiments ranging from artificially created 'lycanthropes,' and even the 'Parasitic Wendaeg' I have mentioned before in another thread.
So, essentially, these mad-hat motherf!%kers specialise in genetic modification and bio-weaponry to an ungodly level.
They even get a mention in an SCP article I'm currently working on, as one of the countrywide sectors was raided and subsequently destroyed, leading to the capture of an anomalous humanoid entity and what could be considered advanced bioweaponry.
So, where am I going with this?
I would like to perhaps propose an idea wherein there is a possibility that new, anomalous entities may or may not have been created by N.L.S.
I acknowledge the fact that perhaps I would be best keeping this a headcanon. I am simply putting the idea out there for those who may be interested.
tl;dr - asshole organisation possibly responsible for an influx of new SCPs.
Sorry if this is not in the right place/there's a concept already going on similar to this/etc. I just wanted to put an idea out there
And then he said, "LET THERE BE PRODUCTIVITY!" and promptly drank all the fucking coffee. - Gospel of a Programmer