It seems then that it is possible to make toroids with relatively gentle saturation. Without more detail, particularly about the core materials and perhaps about the measurement technique, it's hard to reach any definitive 'all other things being equal' conclusion. Another couple of bits of isolated evidence come from posts no 39 and 40 in this thread
https://www.vintage-radio.net/forum/...=133238&page=2 where two forum members report their first-hand experience of toroids with very sharp saturation.
Cheers,
GJ