I'm not affiliated with them in any way, but historically, Online.net (now rebranded as "Scaleway") has always been the main competitor of OVH in France. They were known for their "Dedibox" when I was younger.
OVH kinda won because their VPS pricing was always dirt-cheap compared to the cheap dedicated servers provided by Online.net/Scaleway. Since then OVH VPSes got expensive, and Scaleway started offering cheap VPSes, the prices got aligned. I know a few people who used to be OVH-fanboys and they all migrated to Scaleway and Vultr the last 4 years.
But I agree, the competition for unmetered reliable VPSes is getting thinner and thinner… People are even started to consider metered VPS solutions like Vultr…
Rasmus Lerdorf (the author of PHP) did an objective non-sponsored comparison[1] in 2019, I'm using IONOS personally, but since then strato.de appeared. (Both are German) I'm thinking about adding another node from them to avoid relying on only one vendor.
[1] https://toys.lerdorf.com/low-cost-vps-testing