Anyone know what brand of crankset is this?

https://preview.redd.it/7wqyh6lo5mgg1.jpeg?width=869&format=pjpg&auto=webp&s=1e8c2f3812e85cceca3a3fc4960f382f2034d2f0

Knockoff FSA? Are there any other markings on the inside of the arms?

I’m 99.8% sure these are not Hollowtech, or even Shimano for that matter. If you look up cheap Chinese cranks on google they use the same general design as what you posted.