Chest to Bar Pullups
Safety Tip: If you do not have a quality overhead position, be careful performing high volume reps of this movement. An easy test is to perform Wall Extensions: if you struggle to keep your hands in contact with the wall, you are a prime candidate for scaling this movement.
The same rules apply for the standard kipping Pullup. Be aware of your limitations, work on your mobility and do not overdo practicing or performing this movement in workouts.