The famous Sequoia template: https://articles.sequoiacap.com/writing-a-business-plan and https://www.slideshare.net/PitchDeckCoach/sequoia-capital-pitchdecktemplate

Fundraising deck approach / template to raise your Series A: https://www.ycombinator.com/library/8d-how-to-build-a-great-series-a-pitch-and-deck