What does 饭圈类 ("rice-ring kind") indicate in 生产这些饭圈类产品?
Searching for 饭圈类 in Baidu, I stumbled upon a Baidu Zhidao artcle, which gives an explanation.  The second answer is simpler:

饭圈类似粉丝会，大家有共同喜欢的东西，组成了一个圈子。
[My translation:] 饭圈 is similar to &quot;fan group&quot; [粉丝会], everyone has something they commonly like, the group forms a social circle [圈子].

In particular, 饭 in this context does not mean &quot;cooked rice&quot;, but is used because the English word &quot;fan&quot; is written in the same way as the (untoned) pinyin for 饭 (fàn).  Thus, 饭圈 is a &quot;circle of fans&quot;.  And in the article about Trump, it refers to products produced for Trump's circle of fans (or Trump's supporters).