ART-1000 is unique design, not a conventional MC, I already mentionad why, this design was invented by Victor in Japan in the 70’s (called Direct Couple type). AT improved and upgraded this design. Read about it, watch Fremer’s video tour at Audio-Technica in Japan.
I prefer Technics EPA-100 mk2 tonearm over new arm you have on G or GAE series, but it doesn’t matter, with stock arm you can use hundreds of cartridges, no matter what other people are using. Any mid compliance cart is a perfect match!
I tried over 60 cartridges on various Technics tonearms and turntables.
No one can tell you what cartridge to use, because you can use so many and this arm is very easy to adjust. Stock headshell is fine, if you want to try different shells you can buy 15 more headshells of different mass to experiment with, no one can tell you what you need as the weight of the shell can change tonearm mass and you have to calculate it according to cartridge weight and cartridge compliance.