Note also that triglyceride and HDL levels are associated with the type of LDL. High triglycerides and low HDL tend to be associated with small dense particle high risk LDL (so triglyceride / HDL is sometimes used as an indicator of how risky your LDL particle size is).
http://care.diabetesjournals.org/content/diacare/23/11/1679.full.pdf
https://www.ahajournals.org/doi/pdf/10.1161/01.ATV.12.11.1284
https://www.cooperinstitute.org/2015/12/10/the-blood-triglyceridehdl-ratio-and-ldl-particle-size-critical-issues-for-determining-risk-of-coronary-heart-disease
https://www.ncbi.nlm.nih.gov/pubmed/14564088