There's plenty, there's just not a ton of organization to them. The fact that a quarter of all Christians or so would be considered "evangelicals" alone should tell you that yes, they definitely exist, considering the other statistics involved.

I think a big reason you see a lot more organized groups among Catholics, Orthodox, and non-Christians is that 1. Many of those were in Europe and had some extent of state or institutional backing, while Protestant groups rarely have/had said backing and need to build up themselves against many hostile internal and external forces, and 2. Many of these groups have more in common than differing Protestant sects that may in reality have significant religious and political differences.

If a major, powerful alt-right or alt-right adjacent Protestant faction came up, especially in the modern day, it would likely need to take the form of a coalition not unlike the Nationalists of the SCW, with a relatively factional big-tent unit of various smaller groups, at least in America.