That "school of thought" are Holocaust deniers and "revisionists". They are not interested in advancing scholarship on the Holocaust, they are interested in pushing a conspiracy theory by spreading disinformation. Their theory is that the Holocaust has been invented or exaggerated by "the Jews" for various suspect reasons. The traditional Holocaust denial movement is essentially an antisemitic political movement that aims to make national-socialism more palatable by denying its worst crimes. There is also a Middle Eastern brand of Holocaust denial that is connected to the Israel-Palestine issue.

Here are some links of websites that explain some of the more common Holocaust denial talking points:

• Holocaust denial on trial

• The Nizkor Project

• Holocaust Controversies