While the specific angle that allows you to Party Spawn clip through a door can vary depending on the type of door, one generally consistent method of getting a good angle is called Small Angle clipping. While these can help with Door Clipping, they are not as fast as using the correct angle.
It is also possible to partially clip into certain doors, either by using a Quick Save and Quick Load to trick the game into spawning you in the door, or by using party members and leader swapping to force a party member into the door. The exact angle to stand at varies from door to door. By standing close to the door at the correct angle and then Returning to the Ebon Hawk, you can cause party members to spawn on the other side of the door when you Transit Back.
This method allows you to spawn a party member on the other side of a locked door, thereby 'clipping' past it.
