First step to a litecoin ETF is a Bitcoin ETF
Here are the current Bitcoin ETFs awaiting for approval in the United States.

NYDIG Bitcoin ETF
NYDIG Asset Management
Submitted: 2/16/2021
Final decision due by 3/16/2022
ARK 21Shares Bitcoin ETF
21Shares
Submitted: 6/28/2021
Final decision due by 4/3/2022
Global X Bitcoin Trust
Global X Digital Assets
Submitted: 7/21/2021
Final decision due by April 4/20/2022
Bitwise Bitcoin ETP Trust
Bitwise
Submitted:10/14/2021
Collecting comments until 3/8/2022
Final Decision due by June 11, 2022 (using 180 days initial + 60 day extension)
Grayscale Bitcoin Trust
Grayscale
Submitted: 10/19/2021
Accepting comments until 3/11/2022 Final Decision due by June 16, 2022 (using 180 days initial + 60 day extension)