They are called transfem feet and transmasc feet. The conversions to Standard Burger Units (sbu) are as follows:

1 foot (transfem) = 1.1 foot (sbu)

1 foot (sbu) = 1.1 foot (transmasc)

If you're a transfem who would be 6' (sbu), you are now 5'5" (tf). If you're transmasc and would be 5'5" (sbu), you are now 6' (tm).

These new units could help marginally with height dysphoria, and the only tradeoff is being extremely confusing.

Thank you and you're welcome.