St Helens duo James Graham and Jonny Lomax were both given Grade A charges for dangerous tackles in the win over Wigan and avoided any suspension.
Similarly, Salford back-rower Tyrone McCarthy and Catalans Dragons prop Sam Moa were found guilty of dangerous play but not enough to warrant any punishment.
Moa was also given a caution for a separate offence in the win over Wakefield, along with Leeds forwards Bodene Thompson and Ava Seumanufagai.
Castleford prop Matt Cook was told that his sin-binning for a dangerous tackle in the game against Hull was sufficient punishment.
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