Here are some ways to express different levels of "remarkableness":
More Comparative:
* More remarkable - This emphasizes a higher degree of the quality.
* Highly remarkable - This emphasizes the exceptional nature.
* Unusually remarkable - This emphasizes the unexpected or uncommon nature of the quality.
More Superlative:
* Most remarkable - This is the highest degree of the quality.
* Extraordinarily remarkable - This emphasizes an extreme level of the quality.
* Remarkably exceptional - This emphasizes the unique and outstanding nature.
The best choice depends on the specific context and the level of emphasis you want to convey.