The 4.0 inch display in #3 looks like ST7796S SPI display.
Install Adafruit_ST7796S_kbv from my GitHub.
Switch "VCC Select" to 3V3. Connect your Red ST7796S SPI display:
VCC to 5V
GND to GND
CS to D10
RESET to D8
D/C to D9
SDI to D11 (MOSI)
SCK to D13 (SCK)
LED to 3.3V
SDO to D12 (MISO)
Run the examples from Adafruit_ST7796S_kbv