No the Kell is that house leader. The floating round ball provides ether being their form of light supplement post Traveler blessing taken back. Your referencing a rare and odd circumstance. I don’t recall how the Arkon priest part worked except it was a separate role.

When a kell loves an archon very much they share a special hug and make babies. They then move into a ketch together and get a pet servetor, who ends up having babies of it's own because they for got to get it fixed.

Kells lead the House and commanded all the Fallen and Servitors in their House as the undisputed ruler. Prime Servitors (like Orbiks Prime) are the main source of Ether for the Fallen. After their civilization was destroyed in the Whirlwind, the Fallen’s dependence on Servitors and technology led them to treat the Servitors as gods. Archon Priests were caretakers for the Servitors and also became religious figures. Barons are next in the chain of command, then Captains, then Vandals are the regular soldiers/members of the species, and Dregs are the lowest ranking who are shamed and have two of their arms docked. One Kell leads every House. There can be multiple Prime Servitors in a House or no Primes. Orbiks Prime was actually a secondary Prime for the Wolves. Kaliks Prime was the Prime of their House. But the last of the Houses were killed off in Destiny 1, with their leadership gutted. The remaining Fallen united to form House Dusk, which has no structure of leadership. Since then, Dusk has been dividing, splitting into radical groups and syndicates. Mithrax is making a new House callled Light that wants to side with humanity. Variks has declared himself the Kell of House Judgement (not Kell of Kells, that was a comparison made by one of Ikora’s Hidden), and he intends to restore the peace and laws the Fallen had before the Whirlwind. Anything more questions?

KS27 crushed the response here. I'll only add that Variks, Eramis, and Mithrax are currently the only 3 contenders to fufill the prophecy of rain, which I presume is where the feel that Variks is a kell of kells. Fingers crossed we kill Variks and Eramis and get that house of light happening as the fufillment of the prophecy of rain. That would be my jam.

All Houses have a Prime Servitor they worship and use as the primary of the primary sources for Ether creation. Then the have Kells and sometimes Archon Priests. It’s just part of the Hierarchy. Prime Servitors, Kells, and Archons all basically lead the Houses. But none of that actually matters since all of the old D1 Houses banded together to create the House of Dusk you see in D2. Only now Eramis is moving to create her own House. Mithrax is doing the same. No one knows about Variks, though it’s known that Eramis is with Variks, either as her prisoner or her partner.

Fallen lore isn’t something I’m good with, but every house probably had a prime servitor, but I don’t know if they all worshiped them like gods, or if any of the houses saw them as nothing more than machines. And as far as I know the only house that doesn’t have a kell would be the House of Dusk (and [i]maybe[/i] Judgment?) which isn’t really a house. And I don’t think they really worship servitors since you can find a bunch of them abandoned in some of the destinations. Edit: Oh, Exile also didn’t have a kell. Most of the houses are gone, mostly absorbed into Dusk or destroyed. Though, we do have the House of Darkness coming in Beyond Light, which seems to be composed mostly of ex-Devils, with their Kell also being an old Devils baroness. Ok, how inaccurate was that? Someone correct what I got wrong, since I’m also curious.