Vatricania & Weberbauerocereus

[dmcac]

Hello! Here are some cacti that I have for a while but doubt in their identity. I will appreciate any opinion on what genus/species they are. Thanks ahead, DM,
1. Bought as Vatricania guentheri and I believe that the identification is correct;
2. Bought also as Vatricania guentheri but it doesn't look like. I am mot even sure of the genus... Espostoa? Cleistocactus?
3 and 4. Bought as Weberbauerocereus winterianus (sold as W. johnsonii). I've looked at various images of this species and on most of them it looks somewhat different from mine, namely those big spines are lacking on most images. I am not sure how variable this character in this species is.