I did a bit of a list in early v3. Analyzing about 5000 D1 recruits.
This only includes recruits that were considering a D1 school for each signing period.
Early tendency is as you'd expect. 18% in the first 5pm cycle of signings. 46% by the 11pm. 72% by 5am, 88% by 11am, 94% by the second 5pm period.
End-1: 4% first 5pm period. 19% by 11pm, 35% by 5am, 55% by 11am, 77% by second 5pm. 91% by 11pm.
Whenever is as expected covers the gamut: 1 of 504 that were considering a D1 team signed during the first 5pm cycle. 12% by 11pm. 30% by 5am. 45% by 11am, 63% by 5pm second day 79% by 11pm. Only about 9% held out for the Late recruiting session.