[edit-3:25am-02012020]
the first number in each ratio is the normal ability, the second is the hidden one. due to the raids all being level 1, most of the pokemon with an "(#)-0" ratio are not able to spawn HA in 1* raids. once spray milo with my scorbunny and his death flames i can get better results with up to 3* raids. so i will be back sometime later once that is done with another three boxed filled up.
okay so its time i post my findings thus far:
[as of 02012020]:
first of all i found a gigantamax milcery in a normal red randomly spawned beacon. i took a screenshot on my switch because i thought i was seeing things, but no, apparently you can find g-max raid pokemon in normal red raid beacons and not just the pink/purple ones. i found the den in the southwestern section of the main wild area in the dappled grove [right near the water where you see pangoro spawn in the overworld]. this is a HUGE deal because the raid den was 1*[one star] and normal red, and there was a gigantamax mon in it, and this is something that has not been documented on serebii or any other web service making guides.
my best guess is that the den was rng spawned to be a g-max den, but because i was only able to spawn 1* raids ATM it was forced down to the lowest that could spawn.
ok, now onto HA raid mons vs. NA raid mons. for this i have filled about three boxes full of pokemon i caught from raids both spawned by myself via wishing stones AND random rng map spawns.
1. first thing i found out was that if you are connected to wifi [this does not require an online subscription to nintendo], that raid beacons will spawn seemingly endlessly. once a raid beacon is checked and the raid completed, whether you catch the mon or not, there is an EXTREMELY high chance that other beacons will spawn. if you are doing surprise trades this spawn rate goes up to near instant.
2. second thing i found was that if you use the date change exploit [go to raid menu, invite others, go to the switch clock, change the date, go back to the still open game, exit the invite menu, then check the raid again] you can spoof the game into spawning beacons. this includes max raid beacons that are pink and purple. this method is odd, because it seems like it does not work at first. it is pretty simple, use the date exploit [you will need a wishing piece and to spawn a den yourself for this], then change the date forward by several hours or a single day at a time, look around the wild area you are in, if you see a raid beacon spawned [literally any beacon works] then go to that beacon, then complete that raid [catch the pokemon or not]. following this you will suddenly see a bare MINIMUM of 3-4 more raid beacons just spawn from nowhere in the wild area. if you use the method from #1 above via being connected to wifi when doing this the spawn rate is near instant. this was so crazy that i was running circles in the wild area because every time i cleared a newly spawned raid 1-3 more would spawn right after.
3. the third thing is, finally, a semi-decent study on HA pokemon vs. NA pokemon. i caught random den spawn pokemon all over the wild are, including in the giants gap. listed below are the pokemon and to the right of their names are the ratio of HA to NA. i do not know whether or not some mons can get HA in low level raids so mons with a "(n)-0" ratio for now have to be treated as "in progress".
so here is what i have thus far:
bounsweet: 4-0 [1 shiny]
milcery: 6-5 [1 g-max from 1* normal raid beacon]
lotad: 3-0
lapras: 4-8
wooper: 6-0
vullaby: 3-0
ralts: 5-0
pidove: 3-5
natu: 2-0
barboach: 2-[impossible to obtain]
caterpie: 2-0 [+1 g-max butterfree from time period AFTER the raid event ended]
mudbray: 1-0
nincada: 2-[impossible to obtain in any raids, transfer only]
tympole: 2-0
riolu: 3-0
*1 case of pokerus* - yeah, apparently i got pokerus while out collecting this data. and am currently spreading it to literally everything i can.
*if anyone else has been catching raid pokemon and wishes to help contribute to the ratios of all the other pokemon please feel free to copy-paste my ratios and add your information. specially if you have something that was supposedly impossible like finding a g-max den spawn in a means or area where it should not happen.
also, i am still filling up boxes and am keeping track of everything. so as i progress further and catch more i will make sure to add to the ratios.