In the category "Space" we currently track items of 443 persons. The most popular ones, by number of traded items, are:

Buzz AldrinJohn GlennRichard Truly
Harrison SchmittNeil ArmstrongGuion Bluford
Vance BrandBill DanaRobert Crippen
James McDivittPete ConradJim Lovell
Tom StaffordDave ScottMike Melvill
Gordon FullertonJerry CarrEd Gibson
Jerry LinengerJames Lovell 

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