I'd say that teams were very much converging on the Red Bull design in 2023 and early 2024, but at this point I'd argue it isn't the case any more. If anything I'd say teams are further from Red Bull than they were in 2024 and are copying Ferrari and McLaren moreso than Red Bull.
The cars have now started straying from the Red Bull design. McLaren is running some really unique geometry. Aston Martin is creating new intakes. Cobra winglets are spreading up and down the grid. Ferrari still has a very unique design direction. Front wings are diverging a lot from what Red Bull was historically using. SIS bumps have started being used for outwash. Cannons are starting to go away or follow one of two different design languages, none of which are derived from the Red Bull design.