You can find out more on NWC here: https://habla.news/tony/zapplepay
While the guide is dedicated to ZapplePay, a part of it cover the NWC setup process.
nsecbunker: you sign events remotely, so client side you login with your npub. Read more https://lnshort.it/nsecbunker
Alby NWC: means nostr wallet connect, remotely sign transactions. To setup on kiwi is simply go to settings, choose NWC, sign first transaction will prompt for you to allow permission
