the thing with the "Live" cap, is that it is / could be constantly changing throughout the year depending upon player movements
so for example only - i dont know if this is the case we have paid up to the full cap £2.1m (exclude any dispensations for the example) and we have 2 marquee players the club needs to work out the best case for the club, and that isnt necessarily declaring the highest salaries as the marquee
For Example purposes only

French £200k
Field £200k
Farrell £150k
if French and Field were declared as Marquee, then the cost to the club salary cap is £450k (2 international marquee at £150k), however, if we declared French and Farrell, then the cost to the club falls to £425k (£150k French, £200k Field and £75k Farrell)
So in the above example the club would disclose to the RFL / salary cap auditors that French and Farrell were SC marquee players, as it benefits the club if they can pay over and above the £2.1m cap
If Faz, was on £200k, then it makes even more sense to declare him as 1 of the marquee as the numbers would then become £500k v £425k, so less of a hit against the total cap
i dont think the club need to declare publicly who is marquee, but they will need to declare to the RFL / SC auditors, as they will need to sanction any future changes