I believe that you have forgotten one: Pokémon Yellow.
As with my list in the other thread, it's been many years since I've played these games so I probably can't be very specific with them.
Mario's Picross
There are loads of picross games on 3/DS so I personally see no reason to go back to an old one like this, unless a person has somehow played every other game.
Not Recommended
Mega Man Dr. Wily's Revenge thru Mega Man V
With the exception of Mega Man V, all of these games include the same robots from the NES games, and their respective stages use the same themes and enemies. However, most of the stage layouts are pretty different, so there may still be reason to play them for fans who still want more. There are some obvious concessions made to fit things on a smaller screen though there are many times the games don't compensate for this very well; the fourth game is the one I felt was designed the best around the Game Boy. After the first game, they also included robots from two different games, so for example Mega Man II has 4 robots from NES MM2 and 4 from NES MM3, and so on. Most of the music is similar to NES music but there are still some new pieces of music such as intros and such which are actually pretty good. Mega Man V is an entirely new game with new robots, stages, music, and weapons, making it the most unique of the bunch and the one I would recommend the most. Mega Man III is the one I remember easily being the worst, having the cheapest and most terrible level designs.
Mega Man: Dr. Wily's Revenge: Recommended for Kairon
Mega Man II: Recommended for Kairon
Mega Man III: Not Recommended
Mega Man IV: Recommended
Mega Man V: Recommended
Metroid II: Return of Samus
I wasn't a fan of this game, in fact I'm tempted to claim it as feeling even more primitive than NES Metroid and the worst one in the series. I just don't think a Metroid game works well on the Game Boy, as it suffers from lack of colour more than many games do, and the small screen space isn't good for exploration. There is also a remake on 3DS though I haven't played it, so I don't know how it changes things. However, I know people still like this game so I'm not going to call it a bad one nor flat-out dismiss it.
Recommended for Kairon
Mole Mania
This was certainly a criminally overlooked game which I also had never heard about until its VC release. Also like with Donkey Kong, I tracked down a cartridge since it has some pretty neat Super Game Boy features. The simplest term to describe this game would be "puzzle" but there is still danger from enemies in many areas and it's also sort of like an adventure game since you travel between continuous screens rather than levels. Your main goal is simply to figure out how to exit the current screen to continue on to the next, by doing things like pushing objects and digging through ground to other sections. I believe there was also some sort of bonus objective but it's been so long things are fuzzy. It starts off simple but there are some very clever puzzles later on which will grant nice feelings of satisfaction once they're finally figured out. I am tempted to claim this as the best game on the Game Boy but considering what happened to you with Game Boy Donkey Kong, that would probably just make you less likely to try it out which would be a shame.
Strongly Recommended
Pokémon Blue, Pokémon Red, and Pokémon Yellow
As someone who is not a fan of this series but still likes to play one now and then, I see no reason to return to these games else than nostalgia, especially when the series has never deviated from this same formula so there isn't anything I find unique about them. As the first in the series they are also pretty rough and lack some important information. I believe that Yellow is an enhanced version of Red and Blue, so if a fan absolutely wants to see the roots of this series, that's the one I would say to get.
Pokémon Blue and Red: Not Recommended
Pokémon Yellow: Recommended for Kairon
Super Mario Land
This is probably going to be controversial but this is one of my least-fave Mario games and I feel it doesn't hold up at all. While it may have some weirdness factor to it with the level themes and things like exploding Koopas and shooter sections, it still doesn't come close to topping Super Mario World for the strangeness award. As the first Game Boy game it has really tiny and plain graphics, though that'll be less of an issue on 3DS. It's also really short at 12 levels. The music is the only thing about the game which I still like.
Recommended for Kairon
Super Mario Land 2: 6 Golden Coins
Not that I can be one to talk as a lot of people don't like this game, but I enjoyed it quite a bit and think it's still one of the best games on Game Boy. It takes some more cues from Super Mario World with things like the spin jump and having a world map, as well as feeling like it has more of a focus on exploration and discovery which is always what I enjoy in games. I also like how you could choose the order of the worlds, and they have some pretty unique themes for a Mario game that were always a delight.
Recommended
Wario Land: Super Mario Land 3
This is another of my fave GB games that I really enjoyed a lot. It has an even further focus on finding secrets which is the main reason I was into the game so much, and it almost feels inspired by SMB2 USA with the way Wario can chuck enemies at other enemies. Wario's abilities also feel unique from Mario which helps make this feel more like its own game, and finding treasures can sometimes hinge on figuring out the best way to utilise a power. However, if someone is looking for a more fast-paced or action-packed platformer then they may walk away from this one feeling disappointed.
Recommended