I think only Fujiyama and the suspended rodent coaster are made by Japanese companies, so they're all pretty standard compared to what you'd find in the US. Takabisha has a few more straps than normal Eurofighters, but I didn't find it to be an issue. Eejanaika and Fujiyama are comparable to their Arrow equivalents. I didn't ride Dodonpa this last time, so I'm relying on more distant memories, but it does seem it was somewhat tight (it's also my least favorite of the big four, so no huge loss there).
Highly recommend you get fastpasses early if it looks like there will be more than a couple other people in the park. It's at the stand between the wild mouse and carousel, 1000 yen/ride, 1 hour window scheduled when you purchase (possibly flexible if you're late, but don't risk it), and they sell out quick. It's not cheap, but each one will probably save you 1-3 hours (+) of wait time, which might be necessary. Also, Fujiyama was at one train operations a couple weeks ago, so it could have a deceivingly long line (I counted at least 8 minutes per cycle). Everything else matched what was posted.
Back to your question; watch out for Nasu Highland. They probably have the world's largest collection of Japanese built coasters (Meisho), and I had to sit sideways on most of them as a result. In fact, as a rule there, the larger the coaster, the less legroom you'll receive. I also barely got the seatbelt on at Galaxy Express 999.