@SoundAndFury you're right but I personally think you're being unnecessarily condescending.
What league a player plays in does allow you to generally ballpark where they are skillwise, of course it's far from an exact science. However, in order to do that you need to be generally aware of the pertinent leagues and their power rankings. This is my rough 10 minute guide, the finer details can be debated.
Farmteams: Allsvenskan, VHL, WSM Liga, NLB, DEL2, AlpsHL, Mestis, Erste Liga.
U20: Jr. A SM-Liiga, MHL, SuperElit, Czech U20, Elite Jr. A, EBYSL, DNL
U18: J18 Allsvenskan, Jr. B SM Sarja, Czech U18, Elite Novizen, EBJL
There are more leagues. Some are weird to classify like the DNL, a U19 league, or the Elite Novizen, a U17 league. Lower tier Finnish, Swedish, Swiss, Czech etc leagues are usually pretty irrelevant with usually pretty irrelevant players, at least at the D1A or D1B levels, exceptions exist.
Louis Petit, who plays in the 2nd tier Swedish U20 league, has not played a meaningful role so far in any of France's lineups or games. The NAHL by the way is around the same level of competitiveness as the Swedish SuperElit, I would say just a hair under but significantly more physical...
So in the Swedish J18 leagues there are many clubs because it is regionally organized. However, the best of those clubs make a spring round called the J18 Allsvenskan. Those clubs are the swedish clubs with some level of clout. A player can play J18 elit and be predictably poor, but to make a J18 Allsvenskan squad takes quite a bit of skill.
The Austrian U20 and German U19 leagues aren't great. Austria's U20 team I believe has no active participants in its U20 league, and Germany's U20 team is similar in this regard.
The Italian roster is not bad, but beware. Firstly, the Swiss U20 league is not incredibly competitive, at least in comparison to the D1A. It has produced some good talent for sure , but it's a league generally dominated by 16, 17 and some 18 year olds. Also beware because the Italians who are in the league, unlike the Latvians, are generally so as a result of geographic scouting rather than performance. That team will mostly be run by the AlpsHL guys but Spinell and Deluca are very good, as is one guy you missed Gergorio Gios. Probably not good enough to mount a promotion campaign, but nothing is impossible.
If I had to guess, France finishes 4th behind Kazakhstan, Germany, and Latvia. You correctly identified that Bougro and Guebey will play significant roles for them. However, bringing too many Elite A guys who don't have defining positive characteristics to the D1A is bringing a knife to a gunfight. That's why they left Devouassoux and Benoist behind, and never considered Valente.