alt Hacker NewsMy personal recommendation (disclaimer, used to work for them): https://www.atlys.com A ton of work behind the scenes to find the the weird foibles and gotchas of every visa type on offer and automate all the ridiculous stuff (all the way down to needing to physically courier a passport around for some applications), to get extremely high acceptance rates.
All testimonials from the Netherlands on that website are from people with no distinctly Dutch names. Sure, a majority could be non-Dutch heritage as it's all very much passport related, but still, none?
And once I tried to click through on a Trustpilot review, there was a 404.