Menzerna make a range of very good compounds/polishes, but the naming system leaves a little to be desired and so does that chart. Also it would appear that there are different products available in different parts of the world. It is far more accurate to refer to them by the part number system rather than the generic names such as Final Finish. The part number system is not exactly intuitive, but it is worth learning because you just may end up with the wrong product otherwise, when two products can share the same generic name.
I've not used them all but the ones I do use are the following, most aggressive to least aggressive.
P034S (Power Gloss)
P0203S (Power Finish)
P01066FF (Final Finish)
P085RD (Final Finish)
Menzerna have a rating system for both cut and gloss 1- 5. 5 is the most cut and 5 is the most gloss, so each product has a rating 1-5 for cut and 1-5 for gloss. All their products unlike M105 and M205 are diminishing abrasive compounds/polishes.
Some notes may help - P034S has more cut than M105, but it will definitely leave a haze on most paints. My choice would be M105 normally, but when M105 doesn't play nice as it does with some paints then I usually go with P034S. P0203S can often be used after M105 to remove any hazing that M105 may leave, but before using either PO1066FF or P085RD. For instance older BMW paint just loves P0203S after M105. Some regard P0203S as a 1 stepper, but since I don't do that sort of work, I won't try and expand on that.
My two favourites would be P0106FF (there is also a FA version which I haven't used as it is not available where I am). They both have the same gloss rating (5), but P0106FF has a cut of 2.5 as compared to P085RD (1.5). P085RD is regarded by most as a jewelling polish, but you can achieve exactly the same result with P0106FF, so I'd have to say P0106FF is the more versatile of the two. For your comparison I'd say M205 probably comes in at P0203S or in some cases as P0106FF. Personally M205 just doesn't do it for me, so I'd rather skip M205. I still keep it around just in case, but I haven't used it much lately.
As you can see by their product labels they are designed for rotary use. They do work with DAs, but they really have to be worked hard with a DA. Think speed 6 and just leave it at that for all of them. They take forever to break down with a DA. Obviously some people like that (long work time) but I really don't think that is correct when you compare how they work with a rotary. The cycle with a rotary is really quick. You work them using the Zenith technique - low speed, high speed and back to low speed as the abrasives diminish. That is extremely difficult to achieve with a DA unless you have a really powerful DA that will always spin no matter the load. Once you've used them with a rotary I really doubt you'd go back to a DA, especially for both P0106FF and P085RD. I've not come across any polish that can finish like those two.
They (P0106FF and P085RD) are extremely versatile depending on what pad you use. Anything from LC White down to LC Red can be used depending on the hardness of the paint and what you are trying to achieve. They also work well with LC Hydro Tech pads especially the Crimson pad for jewelling with P085RD. Obviously the pad choice really depends on what you are trying to do.
Some negatives - they all tend to dust some, especially with a DA - some people here really hate anything that dusts. I've always reckoned compounding paint is a dirty business, so dusting isn't a great concern to me as I know I'm going to be washing the vehicle a number of times during a correction, so no big deal to wash away a little dust.
Something like 16,26,20 or 21 is used as a LSP for megs...what about Menz?
Menzerna don't make a sealant other than their APO Sealing Wax which is a carnauba incorporated with a chemical cleaner. Nice product but it is not a sealant. Powerlock is not a Menzerna product but a Menzerna USA product.
If you want a good quality sealant, take a look at Optimum's Opti-Seal or better yet forget sealants and go straight to Opti-Coat.