Counting, but you give your unnecessarily specific opinion for each number.

[Princess Mint]

1

Nice number to lead with, feels very solid and dependable, can be seen as a little bit lonely, but I think it's just independent and self reliant.

 

[Specture Striker]

2
In my opinion a generally simple number with not too much going on with it, sure sequels are known for being better or worse than the first one but other than that 2 is just a simple number that only has that one thing going for it.

 

[Super Jack Sunshine]

3
The first symmetrical number higher than zero, going up to down. I find its design quite interesting. Among the first nine numbers, it is one of two to be symmetrical, the other quite similar. I think the design is perfect.

 

[October Yoshi the SSM]

4
You hear it a lot when hitting a ball. Wait. This isn't golf? Ok. I like that this is the first square number that isn't the same as the normal number and is the number of lines and corners of a square shape.