Of these teams, 19 competed in 2021, with increasing travel costs seeing many of the smaller European countries unable to attend.
In addition to Russia, Austria and Denmark who finished 9th and 10th in the previous edition, made it 3 of the top-10 countries missing for 2022.
Czech Republic, Bulgaria, Poland, Slovenia, Slovakia, Croatia, Portugal, Ukraine and Greece were the other nations absent from 2021.
Slovenia not attending meant that 2022 MXGP world champion Tim Gajser would not race, whilst Portugal missed the event for the first time since 1993.
Home nation United States returned for the first time since 2019, so did Australia, Brazil, Japan, New Zealand and Norway.