ΔE 16.0, loose: different enough that you should pick on purpose. Insignia White is noticeably lighter, cooler than Trollblood Highlight.
Not as a straight swap; see the closer alternatives below. Loose match (ΔE 16). Insignia White is noticeably lighter, cooler than Trollblood Highlight.
The same difference applies the other way round: Trollblood Highlight is noticeably darker, warmer.
ΔE is the colour difference between our two swatch estimates: under about 6 is close, over about 15 is loose. Real paints also differ in finish, coverage and how they thin, so test before you commit.
See Trollblood Highlight on the colour wheel See Insignia White on the colour wheel
All matches: Trollblood Highlight equivalents · Insignia White equivalents