I would vehemently argue for a single exception to rule #1, also known as the Dexter Rule, for it prevents The OA from being mentioned here - or, indeed, in any other of these lists. First, because The OA is easily better than anything in these lists (I should probably add something IMO, IMHO, and MP-NDP to this just to be on the safe side). Second, because, technically speaking, the show is complete - it's just that not all of it has been filmed.
I suggest the rule is to be called the Brit Marling (And Zal Batmanglij) Exception To The Dexter Rule For Reasons That Otherwise None Of These Lists Can Ever Include Mention Of The OA Rule, or, for short, the BM(AZB)ETTDRFRTONOTLCEIMOTOAR rule.
As far as I’m concerned, the expanse is “finished”. It had a known ending (it wasn’t suddenly cancelled), it wrapped up the main season story points,etc.
Just because the world continues doesn’t mean it doesn’t close up main plot points and end.
To me this rule is more for things like firefly that are suddenly cancelled before anything could be resolved
When the OP was written, the Expanse was still airing.
The point of the first rule for the show to have lasted a full season (so no Firefly), and for it to be "complete" (not still airing).
So yes, The Expanse qualifies, as would the OA. Both of them are excellent shows, both definitely honorable mention ... but I'd have to remove a show. Maybe Fringe?