Hello,
Looking for information about “How (e.g. launchpad) is organising its whitelisting and then public sale?”
I mean, I am interested in the whole process from a developer perspective, in short, just for better understanding how things work.
Hi @MartinK and welcome to the forum! 
I’m not really aware how people do their whitelisting. You might try asking on the Solana discord, where there are more developers hanging out.