Datapoint Jamaican/Syllable onsets
With regard to s + obstruent + sonorant clusters, some lects of Jamaican do show strings of this type, but the assumption is that the s is syllabic and thus is not a member of the cluster. In any case, several lects (especially conservative ones) delete the sonorant, e.g. straight > s.chriet > s.chiet.
Values 
Onsets at most moderately complex
- Example 8-182:
-
ton.tidton.tidstuntedstunned, dizzy
- Example 8-183:
-
plaa.tnplaa.tnplantainplantain
- Example 8-184:
-
skuulskuulschoolschool
- Confidence:
- Very certain