Simply the Bent shaft is going to show the following pattern,

Generate High 1X in Axial Direction

Both ends are 180 "Out-of-Phase” in Axial Direction

Noting that:

1X generated, if the bend is near the center of the shaft.

2X generated, if the bend is closer to the coupling.

Often confused with Misalignment & Cocked Bearing as both generate High 1X in Axial Direction.