Google Notes: Hosted Obsidian is AMAZING! You can self host for free, but I recommend supporting them.
1Password: I use Bitwarden (personal) and Keeper (work). Both, in my opinion, much better than 1Pass.
WhatsApp: this one is hard, as it has to do with your contacts. I’m in the same boat here. I use Signal for most friends, but my foreign friends use WhatsApp, which means that I do too.