Removing Chrome plating

All of the above, or none of them. It really depends on the kit. I've had some where it just won't come off.

Easy- Off usually works well. Drano is lye, the same thing.

I've not had much luck with brake fluid, but again try it all until you get one to work.

I use gel formula Drano. Brush it away with a dedicated tooth brush, rinse with water. Takes about 30 minutes usually but some pieces for whatever reason may be ready to brush in as little as 5-10 minutes.

Soak it in Windex.  Add a little ammonia to speed it up.

Easy-Off oven cleaner works for me. I spray it on, wait a couple of minutes, then wipe it off. A toothbrush is helpful for nooks and crannies.

Soak parts overnight in 50/50 bleach and water.