Community counterplay
Sidestep note
As Yoshimitsu against Lee, sidestep or sidewalk either direction against 4,3,4 (Spin Kick Somersault Combo), then punish with SS2.
Source: YouTube: All Strings you can sidestep against Lee
These notes are public community matchup references. Verify details after Tekken 8 patches.
Related answers
As Yoshimitsu against Lee, sidestep right against 2,1, then punish with SS2.
As Yoshimitsu against Lee, sidestep or sidewalk either direction against 4,u+3 (Lee Somersault), then punish with SS2.
As Yoshimitsu against Lee, sidestep left against ws2,4 (Twister Heel), then punish with SS2.
As Yoshimitsu against Lee, sidewalk right against ws3,3,DF+3,3 ... (Infinite Kick Chain: Middle), then punish with with. UF1 Kincho~B2 1.
Against Lee, punish the unsafe sequence at about -10 around Blazing Kick, Hitman; choose the most reliable guaranteed route for your character.
Source: YouTube: How To Beat Every Character In Tekken 8... The Anti Character Guide