no LTC support yet. BTC, ETH, arbitrum tokens, Kujira, DASH, HIVE, DEC, SPS for now.
from coinbase - you can buy USDC.arb, send to your keystore/xdefi/metamask wallet. then you can swap for HIVE, DEC, SPS.
i highly recommend reading through the docs at https://leodex.inleo.io