IWB tracks the Russell 1000 index, a similar category to VOO, VV, and ITOT, though the Russell 1000 covers more constituents than the S&P 500.

Its 18.4% one-year return doesn't differ much from other large-cap ETFs, but its 0.15% expense ratio is five times VOO's 0.03%. Unless a Russell-index product is specifically needed, this is a lower-priority choice.