The Least "40k" weapons are often the ones dominating the meta and playspace.

So, darktide does pretty well at putting in a number of iconic 40k weapons. However, it is kinda sad that things like the "dueling sword" are so prominent when it is about as "un-40k" as a weapon gets.

Similarly, the recon lasgun is a fun gun to run and useful for a number of builds, but it functions more like a "halo" weapon than a 40k weapon, especially a 40k lasgun. Meanwhile, the regular lasgun is basically crap.