Complex sentence: Mizzen + Main was initially self-funded, but later received an investment from several angel investors including Melanie and Marcus Luttrell who are supporters of the brand and products along with Brian Hartline, Timothy Ferriss, Thomas Morstead, Ian Desmond, and other athletes.
Split into simpler sentences: Mizzen + Main was initially self-funded but later received an investment from several angel investors including Melanie and Marcus Luttrell who are supporters of the brand and products. Other individuals that have publicly expressed their support of Mizzen + Main include Brian Hartline, Timothy Ferriss, Thomas Morstead, Ian Desmond, and other athletes.