I've heard animators swear by the Blackwing pencils. It was favored by the early Looney Tunes and Disney artists. It was discontinued in the 1990s but the brand was revived some years ago, so not certain if the quality is the same.
If you're interested in color pencils, the Prismacolor Verithin series is the least waxy color pencil I've used. Feels close to graphite.