Is my catalytic converter bad?

Bank 2 Sensor 2 seems stuck rich.

I'm more suspect of the downstream Bank 2 sensor - it's a flat line. As long as it's up to temperature, it should show swings back and forth relative to the upstream sensors.

I'm not sure you're hot enough (Not ECT, catalyst temperature). I'd love to see the same graphs after some spirited driving.

It appears they went closed loop at time 130, and Bank 1 responded as I would expect to a rich event around time 630.

Bank 2 seems anemic. Ukko's suggestion of a swap makes good diagnostic sense.

Have a look at Test 2 in this answer.

According to it, Bank 2 Sensor 2 (B2S2) is pegged rich in the plot, which is fine.

Bank 1 Sensor 2 (B1S2) is not fine; it should not be oscillating up and down like that.

from the inlet and outlet temps of the cat which are about the same, i'd say the cat is not doing its job...there must be around 200 deg difference between the inlet and outlet temps-outlet being the higher one.