Which preposition to use with stainless

in Occurrences 5%

At forty, she was still the wealthiest unmarried princess in Europe; fastidious in toilette, stainless in reputation, not lovely in temper, rigid in etiquette, learned in precedence, an oracle in court traditions, a terror to the young maids-of-honor, and always quarrelling with her own sisters, younger, fairer, poorer than herself.

as Occurrences 3%

Still save each soul from guilt apart As stainless as each sword And guard undimmed in every heart The image of our Lord!

for Occurrences 1%

With every instinct of her nature recoiling from the very shadow of crimes the world winks at, the family record had been stainless for a generation.

than Occurrences 1%

Rust protested that the bloom upon the unplucked peach was not, in his eyes, more stainless than the reputation of Madame.

Which preposition to use with  stainless