I can honestly say that I’m not familiar with any of the scores you’ve listed above, only having a superficial exposure to his Godzilla scores from his film work.
I know – shameful!
However, one of my favourite pieces of music of any type is his “Ritmica Ostinata”, roughly twenty minutes of driving orchestral music which features the piano more as a percussion instrument than a melodic one. I suspect it may be really demanding on the pianist, as it hardly pauses for breath throughout. If I never do hear any of your listed scores, Ifukube will still remain a composer for when I have an enormous fondness for this piece alone.
There’s a great version of it on the Naxos label, played by Ekaterina Saranceva under Dmitri Yablonski and the Russian Philharmonic Orchestra, who made such a great job of Boris Tischchenko’s absolutely bonkers 7th Symphony.