While 100W is fine for a 16-inch MacBook Pro, that model can be charged at up to 140W, although Apple restricts fast-charging for that model to its own $49/£49 USB-C to MagSafe 3 Cable ...
An active Thunderbolt 3 cable is the more expensive and fully functional ... The differentiating factor is DisplayPort 1.4, which allows for an 8K 30Hz monitor or compressed 8K 60Hz monitor ...