From FIA website:

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Titles up for grabs

FIA World Rally Championship for Drivers

FIA World Rally Championship for Co-Drivers

FIA World Rally Championship for Manufacturers

FIA World Rally Championship for Teams

FIA WRC2 Championship for Drivers

FIA WRC2 Championship for Co-Drivers

FIA WRC2 Challenger Championship for Drivers


[...]

FIA Junior WRC Championship for Drivers

FIA Junior WRC Championship for Co-Drivers

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So in your opinion, it's FIA Junior World Rally Championship Championship?

You cannot compare it with Moto2 or MX2 as it's totally different government body. But you can compare it with other support championship by FIA.

So you have:

FIA Hypercar World Endurance Drivers’ Championship x FIA Endurance Trophy for LMP2 Drivers

FIA Formula One World Championship x FIA Formula 2 Championship

FIA World Rallycross Championship x FIA RX2e Championship

See? Only Kalle Rovanperä is WORLD Rally Champion, meanwhile Emil Lindholm is WRC2 Champion... Also FIA is well known for that they don't really gives world championship status easily. For like 7 years Formula E was not WORLD championship, same for rally raid.