As part of my Library activities, I have looked into the number of project submissions in Programs (Inform programs not included). Those who have more than 1 project are as follows:
bplus 131
SMcNeill 87
[banned user] 53
SierraKen 46
ron77 32
Ashish 30
FellippeHeitor 29
STxAxTIC 29
Petr 28
Qwerkey 26
Cobalt 19
Richard Frost 19
SirCrow 19
Donald Foster 15
TerryRitchie 14
eoredson 13
Zeppelin 13
Dav 12
TempodiBasic 11
RhoSigma 9
keybone 8
PMACKAY 8
_vince 8
rcamp48 7
romichess 7
codeguy 6
Craz1000 6
qbguy 5
AndyA 4
dajan 4
doppler 4
luke 4
MrFreyer 4
mynameispaul 4
qb4ever 4
Qbee 4
Dragoncat 3
jack 3
johnno56 3
Lefty 3
OldMoses 3
pforpond 3
40wattstudio 2
Aeveus 2
Chris80194 2
euklides 2
FilipeEstima 2
hanness 2
Omerta7486 2
Parkland 2
Pete 2
petoro 2
Prithak 2
roadbloc 2
TrialAndTerror 2
xra7en 2
As expected, we see bplus and Steve dominating things. There is no account of how long members have been enrolled, of course. I shall want to bias Library entries somewhat along the lines of contributions, and clearly bplus and Steve are heavily under-represented at present.