Are these 16 sentences grammatically correct?

Hi!
Could you please tell me whether these sentences are grammatically correct?
1a)Men are judged as shallow by women./1b) Women judge men as shallow.
2a)Men are thought of as shallow by women./2b)Women think of men as shallow.
3)We are all born shallow.
4)According to the Western world, Africans are born savages.
5a)The Western world depicted (portrayed/described/perceived) Africans as savages./5b)Africans were depicted (portrayed/described/perceived) as savages by the Western world.
6a)Africans were written off as savages by white people./6b)White people wrote Africans off as savages.
7a)White people deemed Africans to be savages./7b)Africans were deemed (to be) savages by white people.
8a)White people depicted (portrayed/described/perceived) Africans’ practices as savage./8b)Africans’ practices were depicted (portrayed/described/perceived) as savage by white people.
9a)Africans’ practices were written off as savage by white people./9b)White people wrote Africans’ practices off as savage.
10a)Africans’ practices were deemed (to be) savage by white people./10b)White people deemed Africans’ practices to be savage.
11a)Africans were depicted (portrayed/described/perceived) as primitive by the Western world./11b)The Western world depicted (portrayed/described/perceived) Africans as primitive.
12a)Africans were written off as primitive by the Western world./12b)The Western world wrote Africans off as primitive.
13a)The Western world deemed Africans to be primitive./13b)Africans were deemed (to be) primitive by the Western world.
14a)They depicted (portrayed/described/perceived) Africans’ practices as primitive./14b)Africans’ practices were depicted (portrayed/described/perceived) as primitive.
15a)Their practices were written off as primitive./15b)They wrote their practices off as primitive.
16a)Their practices were deemed (to be) primitive./16b)They deemed their practices to be primitive.

Thank you in advance for your patience!