Which preposition to use with sycophancy

in Occurrences 2%

One M. Brutus in particular disgraced his family by sycophancy in the time of Sulla and was afterward killed in Gaul by Pompey.

of Occurrences 2%

Not even Frederic the Great, when he patronized Voltaire, was aware what an insidious foe was domiciled in his palace, with all his sycophancy of rank, with all his courtly flattering.

to Occurrences 1%

Nothing is so valuable as the preservation of national life; nothing is so healthy as scope for energies; nothing is so contemptible and degrading as universal sycophancy to official rule.

Which preposition to use with  sycophancy