Probably not. At least to the extent that Rasmussen is showing of the three.
The Marist poll mentioned along with these only has his support among non-white voters in the 33% area, rather than black voters. They are generally one of the least Republican racial groups so would likely be a lower approval percentage than the entire group of non-white voters. I can't even find the cross-tab in the Emerson poll, only the Rasmussen tweet (where they already misrepresented the Marist poll question).
Rasmussen's track record both near and long term is also heavily slated in the Republican's favor. As much as I'd like to buy some of their results, their history shows them overestimating Republican support, often heavily, in 2008, 2010, 2012, and 2018. They do have that one accurate poll in 2016, but that's really all they have to hang their hats on. Additionally, their polling showed 40% black approval of Trump right before the 2018 elections, which really doesn't square with how people voted.
Meanwhile of the polls whose
crosstabs did include black voters, the most recent polls unanimously show results of an approval percentage between 7% and 13%.