I found these: (did I overlook further ones?)

~~oxx3ooo3oox&#xt - cells are: 1 co + 4 tet + 6 trip + 4 etripy (J7)~~~~oxx3xxx3oox&#xt - cells are: 1 oct + 1 toe + 10 trip + 4 tricu (J3) + 4 etcu (J18)~~- oox3ooo4oxx&#xt - cells are: 1 sirco + 8 tet + 12 trip + 6 esquipy (J8)
- oox3xxx4oxx&#xt - cells are: 1 co + 1 girco + 20 trip + 8 tricu (J3) + 6 escu (J19)
- xox3oxo5oox&#xt - cells are: 1 ike + 1 srid + 40 oct + 30 squippy (J1) + 12 gyepip (J11)

Edit: strikes out, cf. above.

In fact:

- point||tet||co is not convex:

the tet-3-tet dihedral angle of point||tet = pen is arccos(1/4) = 75.522488 degrees

the tet-3-trip dihedral angle of tet||co is arccos(-sqrt(3/8)) = 127.761244 degrees

thus the sum exceeds 180 degrees; especially they do not sum to 180 degrees exactly, as was needed for those etripies ... - oct||tut||toe is not convex either:

the tricu-6-tut dihedral angle of oct||tut is arccos(1/4) = 75.522488 degrees

the trip-3-tut dihedral angle of oct||tut is arccos(sqrt[3/8]) = 52.238756 degrees

the hip-6-tut dihedral angle of tut||toe is arccos(-sqrt[3/8]) = 127.761244 degrees

the tricu-3-tut dihedral angle of tut||toe is arccos(-1/4) = 104.477512 degrees

thus the sum at the triangle indeed is less than 180 degrees,

but the sum at the hexagon again exceeds 180 degrees; especially they do not sum to 180 degrees exactly, as was needed for those etcues ...

Btw., those 2 cases are closely related: the latter is the Stott Expansion of the former wrt. the central node positions. I.e. both will have exactly the same angles between corresponding cells.

--- rk