#IsraelZangwill ones a leader of #zionism changing to 'territorial movment' (ITO), seeing zionism as a mistake:

"Palestine is a country without a people; the Jews are a people without a country' 1901
"P. has but a small population of Arabs and fellahin and wandering, lawless, blackmailing Bedouin tribes
end of '01
''P. proper has already its inhabitants. The pashalik of Jerusalem is already twice as thickly populated as the US

it was a misleading mistake. The country holds 600,000 Arabs." 1917

another organisation that favoured #territorialism over mainstream #zionism whom only wanted 'Eretz Yisrael' (Israel) for settlement, are the ''Zionist Socialist Workers Party'' from #russia and #poland (founded 1905)
''The party played an active role in the 1905 revolution
They and other territorialist parties withdrew from the #WZO after they formally rejected the 'Uganda Plan' (settelment proposal)
https://en.m.wikipedia.org/wiki/Zionist_Socialist_Workers_Party

'The Bund' or the 'General Jewish Labour Bund in Lithuania, Poland and Russia' was an socialist and antizionist pro jewish autonomous party founded in 1897.

They've been siding with the 'Mensheviki' against the 'Bolsheviki'
https://en.m.wikipedia.org/wiki/General_Jewish_Labour_Bund_in_Lithuania,_Poland_and_Russia

Yes, you can be antizionist without being antisemite and even being revolutionary.

The 'Zionist Organisation' was founded 1897. At the first meeting in Basel drafting their first manifesto:

''#Zionism seeks to secure for the Jewish people a publicly recognized, legally assured homeland in Palestine...''
https://en.m.wikipedia.org/wiki/Basel_Program

It is true that jews have gone through a long history of progroms, but it has ideologicly nothing to do with the holocaust and there have been antizionist and territorialist jews