In Mirza Ghulam Ahmad’s famous announcement of 20 February 1886, he claimed that his “Promised Sons” arrival would as-if God had arrived on Earth. This was in terms of the Musleh Maud Prophecy. This seems to be a copy Bahai beliefs in the mid 1880’s. In 1886, in Surma Chasma Arya, MGA claimed that Muhammad (saw) was a manifestation of God. Many years later, Mirza Basheer ud Din Mahmud Ahmad would claim that he was taught Surah Fatiha by angels (1906).
By 1891, MGA called himself the son of God in a weird way. MGA spoke of himself in some type of weird metaphoric trinity. In 1892, MGA had his famous dream wherein he thought himself to be God (see at the 5:48 mark). In 1904, the Al-Hakam claimed that Bahaullah claimed to be the Messiah. In 1904, in Lecture Lahore. It should also be noted that Mirza Ghulam Ahmad’s GOD prayed, ate, fasted and is just like humans.
In the 1907 era (See Haqiqatul Wahy), MGA was claiming that his GOD was human and ate, fasted and etc. MGA took it a step further and claimed to receive a revelation wherein his God called him his son. This could also be a rip-off of Bahaism. In the same book (Haqiqatul Wahy) also claimed to be the Brahman Avatar in a weird revelation. MGA and his team of writers mentioned how this was all metaphorical, just like MGA’s prophethood.
Furthermore, it should be noted that MGA called himself the baruz of God (naozobillah), just like he had claimed to be the baruz (second manifestation) of Muhammad (saw) (astagfarullah). MGA also claimed to have been given the highest throne of them all. This was all in the era of 1906-1907.