Which LS engines came supercharged?

From the factory, GM's supercharged small-blocks are:

Engine	Family	Years	Power	Compression
LSA	Generation IV	2009–2017	556–580 hp	9.00:1
LS9	Generation IV	2009–2013, 2017	638 hp	9.10:1
LT4	Generation V	2015–present	640–682 hp	10.00:1
LT5	Generation V	2019	755 hp	10.00:1

The LSA and LS9 are Gen IV LS engines; the LT4 and LT5 are Gen V (LT) engines with direct injection. Their compression ratios are listed above; the naturally aspirated Gen IV/V 6.2s in our table run 10.4–11.5:1.

Every other LS/LT came naturally aspirated. For boosting a junkyard engine, see making power with an LS.

Specs are GM ratings as published; power varied by year and vehicle. Confirm any engine by the RPO code on the glovebox/console sticker.