Since my reply will not relate to Not-Clara i feel comfortable cross-quoting, shoot me if i'm reading the room wrong.
Uh...I disagree? "most talented" is already a massively-subjective concept on its own, like, what do you mean by this? If it's only about singing - then sure, Clara's probably the best singer in Phase, her only equal and/or superior depending on one's tastes being Lumi.
But i feel like no matter how you define "talent" as related to streaming in other avenues, there'll be a few Phase girls on par or above Clara. She's by far not the best or most entertaining(again, immensely subjective, yes) gamer, there are better yappers than her(tho, admittedly, she is the most schizo...is this a talent?), Lumi/Dizzy/Runie have her beat at scripted content and Pippa easily outshines her(and everyone else at the company tbh) at improv comedy.
Honestly if you asked me "who's the most talented girl in Phase rn", i'd seriously struggle to pick between Lumi and Runie. Both great singers(and songwriters), both excel at writing and executing RP scenarios, both wonderful yappers, Lumi wins out as far as gaming goes(and by having streaming as her only job and actually treating it as a job, girl puts in really solid hours), but Runie's progress from complete non-gamer to doing RE2R challenge runs in a year has left me quite damn impressed.