Fortunately, the internet exists to confirm my bias and make me feel good about myself. To that end:
Early risers are more proactive than evening people:
Yes, according to Christoph Randler who surveyed 367 student participants and found a correlation between their self-reported 'morningness' (as revealed by their answers to questions about how easy they find it to get up in the morning and how alert they feel) and their self-reported proactivity (measured by their agreement with statements like 'I spend time identifying long-range goals for myself' and 'I feel responsible for my own life'). The correlation was relatively weak (.44, where 1 would be a perfect match) but was statistically significant.Yay! Statistically significant!