Anyone know any info about the $100,000k grant for first time home buyers in ny?

Is the dollar amount in your post maybe a mistype?

Yes sorry 100k

I'm not familiar with the program but I'd be happy to do my best to help you apply

It looks like there's a New York State program as well, which is only up to $15k: https://hcr.ny.gov/down-payment-assistant-loan-dpal There's also a no-interest second mortgage option, that you pay back when you sell or refinance, or when you pay of the first mortgage in full: https://hcr.ny.gov/Repayable%20Second%20Lien%20Program