I'd say arab if I weren't wondering where those mahoosive ears had come from! As it's you I will say it's a TB with mane as it's definitely not a shitland.
This is my 17.2hh 21yo ex-racehorse who hasn't done a days work in 7 years! He is about 90% TB and 10% Selle Francais and he likes mascarading as a native pony! I like his mane long, it suits him! I turfed him out rugless today so he had a thorough groom with a full set of Haas brushes when he came in.