Yeah for Intel-based.

Id stay away from the new Apple Silicon ones, at least for another 5 years

I'd check compatibility issues for whatever linux distro first. Expect missing drivers, etc.  

I'd recommend dell latitude if you don't want to use a mac computer. Also affordable, easy to upgrade, and a bonus UPS. 

Can you install any Linux with just using an ISO on an SD card?

100%

I came here to suggest this. Cheap on ebay. solid built. Old ones can be upgraded. Plenty of horsepower for a node.

PlebeiusG

bitcoin_beginners

I want to buy an Intel-type NUC for my node. What are your recommendations?

Kathleen_Croteau

Great suggestion. Looks I can upgrade it with 16GB RAM and up to 8TB SSD.