Chikyu Sentai Fiveman (1990)

Both are older sentai teams (pre-2000) that focuses on a team that is made up of siblings.

Both have the rangers be away for their parents for the most part

It's the very first Super Sentai series what made many of it's successors possible. If you want to watch the original first season of the Super Sentai series.

Both are family focused seasons of Super Sentai that tend to favor the more eccentric, loud and camp side of the series. While that doesn't mean that they don't also have deep themes buried in there, the two shows are best enjoyed when you're just looking for a good time.

Both focus on teachers, have the same kind of special effects and sense of fun. If you are looking for a retro toku these are good choices

It's the 13th sequel of the series from Super Sentai right after Kousoku Sentai Turboranger which is the 12th sequel. If you would like to watch the super sentai series chronologically.

It's the 14th sequel of the series from Super Sentai right after Chikyu Sentai Fiveman which is the 13th sequel. If you would like to watch the super sentai series chronologically.