These all look great. And most of them can at least be summoned by the Jomon units
But the critical problems of Jomon - a very poor starting army and a very slow start due to very high resource (and encumberance) troops remain. You are still therefore going to need an awake SC Pretender and at least reasonable scales. Although the temptation to add magic paths on the Pretender to get your summons is now less as these are mostly summonable. So I am not sure where you are going to get your bless from.
I would have boosted it's starting army (why only 10 of each anyway?). Lowered the summon level of some of its summons - especially the Dai Oni - which is too high at level 8. And as death income is so crucial given them some access to Death Magic. Perhaps given D1 to it's Priest even if that ups its price. At least let it have the Prince of Death pretender!
This boost is far more interesting than that of course. So thank you very much! But Jomon has always been an interesing nation to play