Is there an ARPG where there’s no class and everyone starts the same, but you could turn into a ‘mage’ or ‘fighter’ by speccing that direction as you level up?
Victor Vran gives you skills based on the weapon type you’ve got equipped rather than picking a specific class. Might want to check that out (it’s on steam)
Wolcen works that way, its a little rough and has mixed reviews but I grabbed it this week while on a super cheap sale and am enjoying it well enough so far.
Path of exile is mostly that way. Any class can use any skills. The talent tree or whatever they call it is the same for everyone although the starting points for each class are different. The main differences are the “ascendancy classes”. Every class has 3 unique specialization classes they can ascend into
Not a whole lot of entirely free form games, the one with the most potential but was wasted was The Secret World, but that was an MMORPG.
Grim Dawn, sort of.
As you level up, you choose two “specializations”, which provide a themed group of skills to spend skillpoints on.