Compositions can include mixtures having from about 2 wt % to about 40 wt % of C10-C20 linear paraffins based on the weight of the mixture, from about 60 wt % to about 98 wt % of C10-C20 branched saturated hydrocarbons based on the weight of the mixture, and less than or equal to about 30 wt % of C20+ saturated hydrocarbons based on the weight of the mixture. Methods to obtain these compositions can include the isomerization of one or more C10-C20 alpha olefins under skeletal isomerization conditions to obtain an isomerization mixture and the hydrotreating of the isomerization mixture.