From what i have seen, brochure 1 and brochure 4 have similarities because for me both of them are using descriptive language. To me these brochures are monotonous and there are some cultural languages that might not be understood easily by readers.
Brochure 2 and brochure 3 are also look similar but both of them are more attractive. These brochures can persuade people to read because of the good diction.