Recently, I have been looking for a crowdfunding platform that allows backers to pay in Bitcoin, Ethereum or any other cryptocurrency. To be more specific, reward-based crowdfunding platforms are what I am interested in (i.e. Kickstarter, Indiegogo alike).
They are mostly fiat based. I havent heard of any bitcoin based crowdfunding yet other than ICO/IEO and so on.
There are many sites and options how to offer equity or run an ICO, but basic Google search returns unsatisfying results.
Buying tokens from an ICO is not the same as buying equity shares from a company off the stock market. Please be careful of what you are trying to invest in. ICOs are not legalized securities and you will be losing money in case the project owners decide to abandon the coin. Many ICOs have failed to deliver because of going bankrupt in the bear market.
What are, in your opinion, titans and leaders in this industry with crypto payments?
You mean service providers who allow payments for merchants to accept them from bitcoin users? Bitpay is one of them and a popular one.