LF356: Looking for LF356B Grade Part

In the Datasheet, there is a device classified as "LF356B" which has a higher supported voltage range, better offset, etc.
But the "B" version is not in the Orderables.

1) Is it possible to order the LF356BN (PDIP) version somehow?
2) If not, is there a P2P functionality equivalent / better alternative? Voltage range, offset, DC/AC characteristics, etc
- If there is a good alternative, could we get a P2P comparison chart?

Thanks!