1st stamp is a Wada forgery. Numbers 2-3, 5-9 are genuine Japan revenues. 3rd one could be genuine, but I don't have access to my references to know for sure. The last one has such a heavy cancel, it is hard to tell for sure, but it does have some characteristics of a genuine stamp.
Sorry. I should have said the 4th one could be genuine. The third one has trimmed perfs as pointed out by shermae. It might not be an altered stamp, because revenues were sometimes cut apart with scissors
Might be a rather late jump-in, but some additional information on the revenue stamps:
3rd : medicine revenue 1 Sen, issued 1883.
5th: 1st issue, reduced size (small format) 1 Yen blue, Plate II. Issued August 1873.
6th: 1st issue, large format 1 Yen blue. Issued June 1873. Judging from the shade (e.g. not dark blue) and according to the latest study by Hasegawa (2022),this copy should be from later printing (note that this was formerly categorized as "early printing" in Narumi catalogues)
7th: probably 4th Issue 10 Sen blue (western paper, perforated)
8th: 1st Issue 10 Sen red
9th: 1st issue, large format, 50 Sen green, later printing.