From what I remember (correct me if this has changed) this is what it would be for AACCA rules. Check with your individual competition rules as well though:
#1 = illegal if you plan on having any releases in the pyramid, as you technically need an additional spotter (back spot)
"The top person and all bracers at shoulder level must have a spotter in place during the transition movement. (Shoulder sits and double-based thigh stands do not require an additional spotter.)" ....it should be noted that there are limits for what pyramids you can have braced by shoulder sits & thigh stands as well, before you try to put those in instead of a backless prep (issues with releases)
#2 = illegal because a suspended forward roll skill has to be controlled by 2 posts (2 bases/ possibly 1 base, rather than just the backspot)
- "Suspended forward and backward rolls/flips are permitted provided all of the following conditions are met:
- The top person begins on the performing surface or in a stunt shoulder height or below.
- Two bases or two posts control the top person in suspended forward or backward rolls with continuous hand-to-hand/arm contact to a stunt, two-person cradle, loading position or the performing surface. Exception: One base or post may control the top person in a suspended forward roll/flip with continuous hand-to-hand contact to a two-person cradle. Each hand of the top person must be in a grip with a hand of the base and vice versa.
- During the roll/flip, the feet of the top person must be released."
#3 sounds like it would be legal from your description provided it also follows the rest of this, but again double check with your competition rules:
"Braced forward or backward flips in a pyramid are allowed provided all the following conditions are met:
-The top person begins in a multi-base loading position, stunt, cradle or on the performing surface.
-
The top person maintains continuous hand-to-hand/arm contact with a bracer on each side. The bracers are in preps with a spotter (no shoulder-stand, shoulder-sit or thigh-stand bracers). The top person is between or in front of the bracers.
-At least three catchers (one base and two spotters or two bases and one spotter) who were the original bases/spotters catch the top person in a loading position, stunt or cradle,or assist the top person to the performing surface. If the flip ends in a cradle, the bracers may release the top person once she/he begins to descend and is no longer inverted.
-The top person ends in a non-inverted position.
-The top person does not perform more than one and one quarter (1¼) flipping rotations and does not twist. The bases/catchers remain stationary except as necessary for safety adjustments. "
#4 are both definitely illegal in HS (see underlined line in #3 above as well as info below)
- "Unless listed below, a Release Stunt must either be cradled or connected to at least one bracer.
- Helicopters are allowed provided all of the following conditions are met:
- The top person makes no more than a 180 degree rotation (half-turn).
- Four bases must be in position during the entire release.
- There must be a base at the head/shoulder area during the initiation of the toss as well as the catch.
- The bases are not allowed to change positions during the release.
- The top person must begin and end in a face up position.
- The top person cannot perform a twisting skill.
- A log roll is legal provided it does not involve more than one complete rotations and the top person is not in contact with a person in another stunt.
- In a single-base log roll, the top person must rotate toward the base and begin and end in a face-up position.
- In a multi-base log roll, the top person may begin and end in a face-up position.
- A multi-base, free standing tick-tock that begins at shoulder level is permitted.
- A top person in a horizontal position shoulder height or below or in a cradle may be released to a loading position or stunt shoulder height or below."