A few obvious ones come to mind.

Open D - little Martha, buckets of rain, she talks to angels
Drop D - can’t find my way home, pay day, embryonic journey, good Shepard , come together
Double Drop D - Black water, going to California. As you say, a bunch of Neil Young tunes. Ohio, War of Man

This was really helpful. I have a fingerpicking exercise Neil recommended for training the thumb from getting tucked under the fingers. It involves only the right hand and using thumb, first second a third fingers. For each string pluck the open string with the thumb followed by each finger and desc...

I don’t mind switching from standard tuning to dropped D or double dropped D ….too much. I do keep a guitar in open D (capoed for open E).

John

To respond to one of your questions, the more complex, chord melody arrangements on this site is the main draw for me. I have started to tackle White Bird but I have a ways to go.

This song may not be the best example, but I have found the timing or rhythm component of tablature can be useful even with strummers.

While we are on a George Harrison roll how about a lesson on Run of the Mill?

I would love to see a lesson this song my Leo Brouwer. There are tons of videos on the web that are hard-core classical arrangements. I would like something geared towards a non-classical player.