Please remember IQ tests are ability tests, answers could be Right or Wrong, so the questions should be sorted in increasing difficulty forming a Rasch Hierarchy. Those IQ tests sould be constructed using Modern Test Theory / Item Response Theory (IRT).
Most probably Intelligent Elite, Brainiac Dating, IQ Gorgeous and the others DO NOT meet IRT, they are all ... rubbish.
Intelligent Elite, Brainiac Dating, IQ Gorgeous
Intelligent Elite offers the Swiss 16PT, an adapted Myers-Briggs Type Indicator (MBTI) ipsative test (not to be mistaken with the normative 16PF5)
Many of those tests are extracted from Raven's progressive matrices