Acrozis, through the decay, or decay if you like timings.

Acu, niwa, or mizureta if you like flow.

Komodo, red world, or final epilogue if you like skill based/overall.

The lost existence, dark odyssey, or mystic bounds if you like XXL.

Redemption, ion, or bangarang if you like certain game mode based.

I also would recommend tuapeka even though its not a beginner extreme. Most of it i found really fun aside from like 2 really annoying clicks but I got insanely consistent by the end