It's kinda like this. Any champion who innately has built in true damage, has a form of dealing with CC, has mobility, and excels at dueling will appear as Irelia 2.0.
But really,
is the archetype. He has true damage, an attack speed buff, a form of healing, a gap closer, some form of mobility boost, and an ability to dodge abilities and be immune to a certain crowd control.
Fast forward to 2010, you got
, a more upgraded version that is generally built tankier. She was basically Master Yi 2.0. Unlike Yi, she was granted CC that requires outplaying the enemy but her core design has the same attributes as Master Yi. True damage (though hers is flat), innate healing but now from autos, a way to reduce CC (not immune but follows the same idea), and resettable gap closers.
Then you got in 2015 reworked
, who pretty much seemed like Irelia 2.0, as she has the same abilities but just reimagined differently. Burstier true damage, generally more mobility (not immediately resettable but she gets a 60% cdr in her gap closer as long as she hits an enemy), innate healing (less than Irelia's though), an ability that ignores all CC and damage except turret damage, and an ability that can slow or stun an enemy depending on how you outplay them (sounds very similar to Irelia's equilibrium strike).
is the released in 2017, and she pretty much follows the line of these champs. For many she is the Fiora 2.0. Has burstier true damage, mobility (not as mobilie as Fiora but covers a larger distance), innate healing, and attack speed boost, an ult that makes her untargetable, and arena-like ult was inspired by Fiora's ult, though Camille provides more utility in team fight with it than Fiora.
You can argue that
is also similar to these champions as he is an excellent duelist, has immunity to CC, and deals true damage, but he just lacks the gap closer. Same with
and maybe
.