Here are some resources that may be helpful to you in developing a pitch deck for your startup.

Sequoia
Sequoia is one of the largest and most influential venture capital firms on Sand Hill Road. Here’s what they say should be in a pitch deck. Note that the title of the page is “Writing a Business Plan” but the text is actually about preparing a pitch deck (left over from a previous era, perhaps).

Uber
Here’s the original UberCab pitch deck. It got them funded, but it’s interesting to note how their business model changed.

Front
This is a few years old now (2016), but here’s a good post about a deck that successfully raised $10M, along with notes from the founder.

Coinbase
Here’s the Coinbase seed deck and some thoughts from the founder.

Y Combinator
Here’s the official Y Combinator seed deck template.