Looking for quick opinions on extent of hair loss

[JasonJ]

Hello, I'm 20 coming up on my 21st birthday soon. I've noticed, within the past year, the hair above my temples can be seen through after cutting my hair shorter and the hairline around my temples has matured/receded within that same time period. I don't know if I would say I notice my hair thinning because it has always been fine, but if I hold it back with my hand I can easily see my scalp. I've been looking at hair loss assessments online and think I'm at type 2. I've got one grandfather and two uncles who are bald from hair loss and I have a cousin who is progressing to a stage 4. I've been thinking about buying rogaine to try and counteract any potential worsening thinning or recession. I've attached some pictures and was hoping others could chime in with their take on any loss and if rogaine would be beneficial.