As Midge’s husband, Joel is barely tolerable. His character is predictable and pitiful. When he separates from her, though, and begins his own career as a club owner, he becomes much more intriguing.
He’s an unhappy mid-level manager married to someone more clever than he during the first season. At that point he’s probably a Null. He doesn’t do anything fresh or distinct. Later, though, we can see an Enneagram come through.
The show makes a point of stressing his ease at instigating a marriage separation. Midge is socially screwed, and Joel is unaffected. He can walk away with no repercussions. However, he’s a good father, responsible and loving, in an era that didn’t expect such behavior. (This is the first non-Null thing he does.)
Later, he also begins to connect to his father’s business in the garment industry. Now he wants to sharpen the finances and strengthen the family factory. He’s a dedicated worker and a non-fussy, jump-in kind of guy.
When he opens his own nightclub, he starts a relationship with a woman who suits him much better than Midge ever did. He’s striving, he’s a good egg (the club comes with a surprise gambling hall in the basement), and he’s effective. Susie brings him Midge’s earnings to manage because he’s so reliable. All of this money competence suggests a One, but he’s completely lacking in a One’s characteristic wit.
So, where do we end up? He’s an Envy person. Midge’s success ate him alive for a while. He’s not a Three, though. He spent too much time at the beginning knowing nothing about what he wanted from life. You know, he might be a poorly-written Two! He collects jokes. At first, he steals them from Bob Newhart’s comedy album. Then that side of his personality drops from the story. Then he opens a club where he can produce and encourage lively acts.
It’s a stab, I admit it. Joel’s character could’ve been streamlined to make him a solid Two. It would’ve been hilarious! We’ll see where he goes in the next season. He has potential, but so far he’s not a solid Enneagram. He’s trying, though, so I’ll give him the benefit of the doubt.