Bitinfocharts shows the distribution of coins among addresses.
https://bitinfocharts.com/top-100-richest-litecoin-addresses.html
https://bitinfocharts.com/top-100-richest-bitcoin%20cash-addresses.html
https://bitinfocharts.com/top-100-richest-bitcoin-addresses.html
It's not an apples-to-apples comparison since LTC has a bigger supply, so further interpretation may be needed, but a cursory examination suggests that LTC ownership is way more concentrated among whales than either BCH or BTC.
BCH is only slightly more concentrated than BTC.