That isn't correct. JP Morgan and UBS both analysed this with public data and concluded there was no correlation between severity/length of lockdown and outcome

That isn't correct. JP Morgan and UBS both analysed this with public data and concluded there was no correlation between severity/length of lockdown and outcomes. Not sure where you got the idea that countries with early lockdowns at 'insignificant excess deaths' in general. Bear in mind you don't know how many people died OF covid, only those who died WITH it at the time of death, which is a totally different thing. Cases where there are no other obvious causes of death (e.g. amongst the young) are vanishingly rare.