Critical mining stock/ETF suggestions

Hello, I would like to find some tickers in critical minerals (ideally ETF) which would give good exposure to my portfolio. Ideally, they would be canadian but open to US and global tickers as well. Would love to hear about your opinions and suggestions. Here’s a couple tickers I am currently looking at: HURA, REMX, PICK, XETM. Thanks in advance and looking forward the read your suggestions.