In the category "Space" we currently track items of 471 persons. The most popular ones, by number of traded items, are:

Buzz AldrinJohn GlennNeil Armstrong
Jim LovellGuion BlufordAlan Shepard
Harrison SchmittRobert CrippenVance Brand
Richard TrulyBill DanaJames Lovell
Tom StaffordFred HaisePete Conrad
Gene KranzHoot GibsonDave Scott
Gene CernanAlan Bean 

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