5A > 5BB > j.BB > j.CC > 5BB > 5CC > 2C > 236C > 22B (2383 damage, 27 heat) seems really simple to do for some of the bigger characters (Tager, Hakumen, Valkenhayn and Bang).
5A > 5BB > j.BB(slight delay) > j.C > 5BB > j.BB(slight delay) > j.C > 5CC > 22A (2339 damage, 26 heat) seems pretty simple for me too and works on Ragna, Jin and other similar sized characters.
What are actually the optimal versions to do and do they really offer much more in terms of damage/heat compared to the difficulty of them?