Is Ethereum block header a list?

Question

Decoding a RLP encoded block using Eth specifications do we get header as list? But as per format i.e., [[blockHeader,transactionList,uncleList],totalDifficulty], blockHeader should have been string.

Attaching Encoded Block below

17f902ccf902c8f90258a0a5e6ce19d2977e762e455309f31971edbe3
46172b5f869f9193bea18cdb29520a01dcc4de8dec75d7aab85b567b6
ccd41ad312451b948a7413f0a142fd40d493479400000000000000000
00000000000000000000000a0ff0cb4f1ba9acef7d1b8469a0637ab8a
bf65c88dee1685a0bb7fbbd565c3e921a0cf9084fc1c24adb33aa1c1c
ca7fdf06700931c6eae3a7a52d1512c81afd83d0fa0056b23fbba4806
96b65fe5a59b8f2148a1299103c4f57df839233af2cf4ca2d2b901000
000000000000000000000000000000000000000000000000000000000
000000000000000000000000000000000000000000000000000000000
000000000000000000000000000000000000000000000000000000000
000000000000000000000000000000000000000000000000000000000
000000000000000000000000000000000000000000000000000000000
000000000000000000000000000000000000000000000000000000000
000000000000000000000000000000000000000000000000000000000
000000000000000000000000000000000000000000000000000000000
000000000000000000000000000000000000000000000000000000002
01835ff7a7825208845df9fcfcb861d883010906846765746888676f3
12e31312e31856c696e7578000000000000008e5bd5d89fa09223dfd1
39abcdee95225416eca1a5363c00def8a2cedfce88f733c88adbefa18
3c107336bb2aa4cf8e0ebef8db2957fbe41fa6d8b7517d2b4f901a000
000000000000000000000000000000000000000000000000000000000
00000880000000000000000f86af86880018252089473aa7daa1378e5
33c3909f8a69b3296ae9f5fe4c87b1a2bc2ec5000080820a96a00ae79
1d21f7f5b87e52da210fb653e4c2b8562380bf7b18500b33efb24e2c4
3aa02b15fdd44e6ad1a52a93770b4916e3c94759c600982f6a232689e
e2669aaa062

Answer 1

You can find the go implementation of the header struct here. It could be implemented in different languages differently depending on the corresponding programming patterns. However it should match the specs in the Ethereum yellow paper.