TOTAL shows total market capitalization of the top-125 cryptocurrencies.
TOTAL2 shows total market capitalization of the top-125 cryptocurrencies, excluding BTC.
OTHERS shows total market capitalization of the top-125 cryptocurrencies, excluding BTC and some other top cryptocurrencies. You can see the list of excluded coins on the Total Market Capitalization Dominance chart on the cryptocurrency market page. The excluded coins are displayed along with the OTHERS market chart.