Casino software providers
An online casino rarely makes its own games. It rents them from a handful of studios, and the same slot or live table can turn up at a hundred sites. These profiles are about the studios, not the casinos.
Why the maker matters
When you sit down at an online slot or a live blackjack table, the casino is the shop and the provider is the factory. The provider builds the game, sets the versions it can be run at and, for live games, runs the studio and the dealers. I'd know who made a game before I played it, for the same reason I'd know who printed the odds.
Each profile says who the company is today, because these firms get bought, merged and renamed, what it makes, the features it states, and the licences or approvals it lists, each with the place we read it and the date. A provider listing a licence tells you where it is allowed to supply games. It says nothing about whether a given casino is allowed to take your bet where you live, and I wouldn't read it that way.
What the profiles don't do
They don't rank the studios or tell you which games pay best. The return is set game by game, so I'd read it in the game's own help screen, as the RTP guide explains. Each profile says which of the casinos we've reviewed show that maker's games.