Both are very similar. The two main differences imo are the following:
Underlying index:
VT: FTSE Global All Cap (Large, mid, and small caps)
VGWL: FTSE All-World (Large and mid-caps, cover 90-95% of investable market cap)
Expense ratio:
VT: 0.11%
VGWL: 0.25%
Missing out on small caps probably won't affect returns too much in the long run (I could be wrong), but the increased in expense ratio for VGWL is kind of a bummer.