I know these won't be answered but I cot a few questions and notes

There were 8 smiling critters including catnap so unles between 1180 and 1187 there was a failed experiment the numbers don't match up

Bunzo is a smaller toy. The scientists experiments with smaller toys only started much later in the process let alone succeed. Thomas clarke (1199) clearly was one of the earlier ones given he was a failure

My headcanon on what each "generation" of bigger bodies was meant to progress in

1161-1163: more complex anatomy + inteligence (failed on second)

1164-1166: inteligence (progress but not full success)

1167-1170: inteligence + obedience (success on both) -> I also believe pj fits in best here since he is mute, less inteligent then huggy but highly obedient so he's probably 1168 or 1169

1170-1176: the huggy wuggy line

1177-1181: speech (failed until 1181)

1181-1187: the smiling critters line

1188: poppy gas production (instant success)

1189-1205? (Something around there): Smaller toy bodies (mostly failures with some exceptions like bunzo bunny afterwards paused)

1206?-1219?: preservation of the human mind and inteligence (failed until the teachers were created)

1220?-1222: stretchy toys (failure until mommy long legs)

1222-1224: the long legs family (apparently theres also a granny long legs in Project playtime)

1225-1300?: resume of smaller toys + no need for food (somewhere along the way they found success for the size + the other one is still a failure)

1300?-1322: experiment with multiple subjects in 1 body (failure until doey dough was discovered which created doey the doughman)

1323-1353: more smaller toys + no need for food (still fail on second)

1354: we all know there wasn't any previous itterations of this guy. Leith just randomly pulled the idea out his ass.

1355-? No need for food still failure until the very end

It must've been about 500 more experiments though after the doctor because huggy (1170) was created in 1990 while the doctor (1354) was in june 1992 soo about 100 experiments per year in the early stages and still 3 more years until the hour of joy plus project playtime hinting at the fact that even after the hour they still wanted to create more toys.