Valve spring compressor......what's everyone use?

Yup, that’s exactly what mine looks like.

I have one that works on the engine as well, the kind that’s a big lever that bolts to the rocker stands. But off the engine I’ve got exactly the same style compressor.
You have a link for the one that you used that works on the engine. Ordered one but didn’t have enough space side to side where the rocker stands bolt into