Another addition to your checklist, BPF, might be the minimum RPM number at which flight is sustainable.
If RPM is higher than, approximately, 1700 RPM (assuming fixed pitch here), you can fly to the nearest airport (at approximately Vbg/Vy). If it's lower than that number, you cannot sustain flight and will have to prepare for an off-airport landing. But you might have a little engine power to control your descent.
Another thing is uncontrollable/runaway RPM, for instance due to a stuck or broken throttle linkage. Fly to the overhead of the nearest airfield, cut the engine with mixture and/or ignition and make a glide landing. To contain the RPM/speed in case of a runaway, initiate a climb or use steep turns. A runaway RPM can also be contained with very aggressive leaning. Yes, the engine will run rough, but you will be able to keep it below redline.