SO no I have not found one, BUT using the few that have canon heights that can be found, plus some hints and headcanons I can come up with a sort of impromptu chart (though now I want to make a real one lol, my brain just LOVES starting projects like this)
If we look at the four you mentioned we get this:
Taniks has a height listed on the destinypedia of 12'1", and Fikrul, at least in my head, is a bit larger (looking at him next to Uldren he is fucking huge) putting him at about 13 feet....we can assume most Kells and Archons are between 12 to 13 feet tall. (Now that is, back on Riis who knows how big you could get, and it would be more based on genetics than Ether availability)
Now that brings us to Eramis, who is a Kell but is seemingly significantly smaller than say, Skolas. (It can be hard to tell, her size does seem significantly different in cut scenes vs when you are fighting her) I personally put her at about 10 feet, larger than the average Captain but certainly smaller than many of the Eliksni leaders we see, which I think makes it even more impressive just how tough and feared she is. There could be several reasons you could come up for this, from not hoarding as much ether to her simply being stunted etc....
As far as Variks goes, it is confirmed in the Most Loyal he is the same size as a Vandal, which I put at right about 7 feet. Poor guy definitely wouldn't make even the top third of All Eliksni 😭
Looking at some other big name characters:
This wound up being extremely wolf heavy lmfao. I make Aksor a bit bigger than Skolas, but you could easily have them the same height, I think Kells and Archons would be within a foot or two of each other. We know Skolas was just about 12 feet tall. I threw Drevis in as an example of what an average Baron might be, and because I think she's cool lol.
Then we have our favorite Catboy, Kell Meow Meow- I mean Misraaks. It's Canon that in House light no one gets more Ether because of rank...so he is still about the size of a Captain, which I put at about 9 feet.
So looking at this we would probably say Fikrul is the biggest..BUT WAIT there are two bitches who are EVEN BIGGER than he is
Starting with one of his own Scorn Barons, Elykris the Machinist who is just about FIFTEEN FUCKING FEET TALL.
I have no idea how she got like this....just BINGING dark Ether???? Who knows but honestly queen shit.
But even SHE is not the tallest....no there is one fucking freak who is an ungodly beast among Eliksni....
Aksis, the Devil Archon Prime infected with Siva is listed as TWENTY FIVE FEET ELEVEN INCHES TALL!!!!!!!!!!! Like by the great fucking machine.
But anyway if we put them in height order we get this...
Obviously there are a lot of Eliksni missing here....I didn't put in any Salvation Barons because I would have to try to obsessively compare them in what scenes we do get and might just wind up with my headcanons anyway so...
Anyway that is an....EXTENSIVE and maybe not even that helpful answer but....thank you so much for sending me an ask!! I literally cannot remember the last time I got one, even if I might have gone just a bit overboard here lol