In the category "Space" we currently track items of 479 persons. The most popular ones, by number of traded items, are:

Buzz AldrinJohn GlennNeil Armstrong
Jim LovellAlan ShepardGuion Bluford
Harrison SchmittJames LovellRobert Crippen
Fred HaiseRichard TrulyGene Kranz
Vance BrandBill DanaTom Stafford
Pete ConradGene CernanAlan Bean
Hoot GibsonCharlie Duke 

You can find all people that we're currently tracking items for in the alphabetical index:
A    B    C    D    E    F    G    H    I    J    K    L    M    N    O    P    R    S    T    V    W    Y    Z