<80 MC Sony first party titles over the last 6, 7 years.
Knack - 54
Knack 2 - 69
The Order 1886 - 63
Driveclub - 71 (Studio closed)
Days Gone - 72
Killzone Shadowfall - 73
Gran Turismo Sport - 75
7 years ago, PS3 was active and a first party studio is an accredited developer in some of these games like The Order 1886.
The Tomorrow Children - 54
Rachet and Clank Full Frontle Assault - 64
Beyond Two Souls - 70
Sorcery - 70
Rain - 72
LittleBigPlanet Karting - 73
Playstation All-Star Battle Royale - 74
Tokyo Jungle - 74
inFamous First Light - 74 (standalone)
Ratchet and Clank Into the Nexus - 76
Starhawk - 77
Detroit Become Human - 78
Unfinished Swan - 79
DriveClub Bikes - 79
The list is much larger if you include exclusives which were developed by independent studios but published by Sony or PS Move/PSVR shovelware.
how poorly the Knack games reviewed. The fuck happened there.
Between Knack and The Tomorrow Children, the only common thing is SIE Japan Studio