Yeah they all have 22/23 apart from the final season
Tbf a good chunk of them are standalone cases, but the focus on the ongoing storylines significantly increases over time, as do the sci fi elements which were more muted at first. Basically it starts out feeling like one of the many generic procedurals that are already out there, albeit with a more unique premise, but evolves into something else entirely, patience is definitely rewarded.
It's different to Westworld but they're both tackling the same ideas in different ways.