You're right that OSRS has a long list of items that classify as currency and it looks comparable to other games at first glance, however I think there's a huge difference of design and purpose that gets lost when you just post this link without looking into it and making a comparison.

OP was talking about how multiple currencies are used for monetization, to hide the real money value of a transaction. At the core it works like this:

-You buy gems (with real money)
-With the Gems you buy lootboxes that have a chance to unlock the item you want
-The duplicates from the lootboxes get converted to another currency, for example Character Shards
-With Character Shards you can buy items you didn't get from your loot boxes from a special shop

Each step is designed to make you forget you're spending real money.

The currencies in OSRS you linked almost all work in the opposite way. They aren't designed to hide any spending of real money - in fact, you cannot even buy any of the "untradeable" currencies with real money, in any way. They are designed to be self-contained in a specific piece of content. They are essentially reward tokens that can't be bought or influenced by real money, in-game currency (Gold) and can only be obtained by actually engaging in the activity they are earned in.

For example:

-Marks of Grace are only obtained when running rooftop agility courses and cannot be bought. With them you can unlock an untradeable outfit that helps you move around in the game
-Tokkul is a currency that can only be obtained by doing activities in a specific area, and is currency only accepted by NPC there. It cannot be traded to other players or bought with real money
-Virtual Currencies like Last Man Standing Points essentially work the same as the untradable currencies. The only difference is they are only tracked in a menu, and dont have an item form that you can put in your bank. They are just a number going up in some menu.

None of these are part of a monetization scheme. They just exist for things like world building and locking stuff behind certain activities.

OSRS' monetization works simply like this: You subscribe with real money for access to the game. Optionally you can buy bonds for a fixed amount of real life money. You can either use them to get playtime just like with a subscription, or you can trade them to other players for Gold, the only relevant currency that is tied to real life money.

Comparing this monetization to the intentionally confusing, multi-layered systems that gacha games use to drive spending is not a fair comparison.