All of these are old Testament Mosaic laws, which applies to the Hebrews of The time (the rules regarding slaves don't apply to modern day slaves and I don't think the women being 'property' part also doesn't apply to modern Jews at all. These were made during a time where the Hebrews (Jews) were brought out of Egypt where they were slaves, they also had slaves themselves (probably to help with the tons of work that was forced on them by Pharaoh in Exodus 5:4—9 but that's my interpretation) also slavery was very common back in the ancient times, especially slave girls so of course Laws Made by God would apply to that time and thus outdated when it comes to slave girls and boys. It wasn't saying women were properties but it was talking about slaves (including slave girls) I hope this part does make sense but my point is that context matters when it comes to Old Testament Laws
As for the "Girls being Unclean" part, God's not saying we are lesser than men or 'unclean'. I read through the entirety of Leviticus as a woman and nowhere does it say women are lesser or unclean
Leviticus is mainly rules about worship and ceremonies, including how to build a tabernacle and to decorate it, How Jewish Priests should dress and what animals to Sacrifice on what occasion and how.
Leviticus also has multiple verses and chapters on Bodily fluids such as Seminal Fluids from a Man
"When a man has an emission of semen, he must bathe his entire body in water; he remains unclean until evening. Every piece of clothing and everything made of leather which gets semen on it must be washed with water; it remains unclean until evening. When a man sleeps with a woman and has an emission of semen, both are to wash in water; they remain unclean until evening."
—Leviticus 15:16-18
Same with Menstrual Blood
"When a woman has a discharge of blood, the impurity of her menstrual period lasts seven days. Anyone who touches her is unclean until evening. Everything on which she lies or sits during her period is unclean. Anyone who touches her bed or anything on which she sits must wash his clothes and bathe in water; he remains unclean until evening.
Leviticus 15:19-23
And it says later in Leviticus 12:6-7
"she must take them to the door of the Tabernacle to the priest; and the priest will offer them before the Lord and make atonement for her; then she will be ceremonially clean again after her bleeding childbirth"
God is not saying women are unclean, or Baby girls are unclean. The Days of 'Uncleanliness' after childbirth is because the Mother bleeds during her childbirth, Like How a Man who rejects Semen from the Crotch Area is considered Ceremonially Unpure until the Evening (and has to bathe) Leviticus is a book based on rules for Ceremonies and Worship, And that's why it stresses heavily on hygiene and gives details on little things. Like Exodus none of these laws apply to Modern Christians, Maybe it does apply to Modern Jews but it was made for that time, not this time.
I hope you understand this, I really tried my best.
following some liberal/progressive christian blogs on here is like will i see some profound insight into the nature of God or straight heresy
and then following conservative christian blogs is like will i see something that upholds tradition and is spiritually edifying or will i see someone who thinks women shouldn't have rights